[swift5] Add property x-null-encodable extension for full control over encoding value/nil or nothing (#11141)

* feat(ISSUE-11033): add null encodable type and mustache changes

* feat(ISSUE-11033): regen all swift5 samples

* feat(ISSUE-11033): add swift5 examples of null encodable

* feat(ISSUE-11033): fix hashable and compliation issues

* fix(ISSUE-11033): fix tests by using new enum encodeValue

* fix(ISSUE-11033): fix tests by using new enum encodeValue

* fix(ISSUE-11033): revert status back in pet api test

* fix(ISSUE-11033): fix issue with objc compat generator

* feat(ISSUE-11033): restore default values to null encodables

* chore(ISSUE-11033): rename default value for null encodable

* chore(ISSUE-11033): add test cases with different nullable defaults

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/Swift5ClientCodegen.java

@@ -1110,6 +1110,16 @@ public class Swift5ClientCodegen extends DefaultCodegen implements CodegenConfig
                     prop.vendorExtensions.put("x-codegen-escaped-property-name", true);
                     modelHasPropertyWithEscapedName = true;
                 }
+
+                if (prop.vendorExtensions.containsKey("x-null-encodable")) {
+                    if (prop.vendorExtensions.get("x-null-encodable").toString().equals("true")) {
+                        if (prop.defaultValue == null || prop.defaultValue.equals("null")) {
+                            prop.vendorExtensions.put("x-null-encodable-default-value", ".encodeNull");
+                        } else {
+                            prop.vendorExtensions.put("x-null-encodable-default-value", ".encodeValue(" + prop.defaultValue + ")");
+                        }
+                    }
+                }
             }
             if (modelHasPropertyWithEscapedName) {
                 cm.vendorExtensions.put("x-codegen-has-escaped-property-names", true);

modules/openapi-generator/src/main/resources/swift5/Models.mustache

@@ -37,6 +37,36 @@ extension CaseIterableDefaultsLast {
     }
 }
 
+/// A flexible type that can be encoded (`.encodeNull` or `.encodeValue`)
+/// or not encoded (`.encodeNothing`). Intended for request payloads.
+public enum NullEncodable<Wrapped: Hashable>: Hashable {
+    case encodeNothing
+    case encodeNull
+    case encodeValue(Wrapped)
+}
+
+extension NullEncodable: Codable where Wrapped: Codable {
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        if let value = try? container.decode(Wrapped.self) {
+            self = .encodeValue(value)
+        } else if container.decodeNil() {
+            self = .encodeNull
+        } else {
+            self = .encodeNothing
+        }
+    }
+
+    public func encode(to encoder: Encoder) throws {
+        var container = encoder.singleValueContainer()
+        switch self {
+        case .encodeNothing: return
+        case .encodeNull: try container.encodeNil()
+        case .encodeValue(let wrapped): try container.encode(wrapped)
+        }
+    }
+}
+
 {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} enum ErrorResponse: Error {
     case error(Int, Data?, URLResponse?, Error)
 }

modules/openapi-generator/src/main/resources/swift5/modelObject.mustache

@@ -11,17 +11,26 @@
 {{#isEnum}}
     {{#description}}/** {{{.}}} */
     {{/description}}{{#deprecated}}@available(*, deprecated, message: "This property is deprecated.")
-    {{/deprecated}}{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} {{#readonlyProperties}}private(set) {{/readonlyProperties}}var {{{name}}}: {{{datatypeWithEnum}}}{{#required}}{{#isNullable}}?{{/isNullable}}{{/required}}{{^required}}?{{/required}}{{#defaultValue}} = {{{.}}}{{/defaultValue}}
+    {{/deprecated}}{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} {{#readonlyProperties}}private(set) {{/readonlyProperties}}var {{{name}}}: {{#vendorExtensions.x-null-encodable}}NullEncodable<{{{datatypeWithEnum}}}>{{/vendorExtensions.x-null-encodable}}{{^vendorExtensions.x-null-encodable}}{{{datatypeWithEnum}}}{{#required}}{{#isNullable}}?{{/isNullable}}{{/required}}{{^required}}?{{/required}}{{/vendorExtensions.x-null-encodable}}{{#defaultValue}} = {{#vendorExtensions.x-null-encodable}}{{{vendorExtensions.x-null-encodable-default-value}}}{{/vendorExtensions.x-null-encodable}}{{^vendorExtensions.x-null-encodable}}{{{.}}}{{/vendorExtensions.x-null-encodable}}{{/defaultValue}}
 {{/isEnum}}
 {{^isEnum}}
     {{#description}}/** {{{.}}} */
     {{/description}}{{#deprecated}}@available(*, deprecated, message: "This property is deprecated.")
-    {{/deprecated}}{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} {{#readonlyProperties}}private(set) {{/readonlyProperties}}var {{{name}}}: {{{datatype}}}{{#required}}{{#isNullable}}?{{/isNullable}}{{/required}}{{^required}}?{{/required}}{{#defaultValue}} = {{{.}}}{{/defaultValue}}
+    {{/deprecated}}{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} {{#readonlyProperties}}private(set) {{/readonlyProperties}}var {{{name}}}: {{#vendorExtensions.x-null-encodable}}NullEncodable<{{{datatype}}}>{{/vendorExtensions.x-null-encodable}}{{^vendorExtensions.x-null-encodable}}{{{datatype}}}{{#required}}{{#isNullable}}?{{/isNullable}}{{/required}}{{^required}}?{{/required}}{{/vendorExtensions.x-null-encodable}}{{#defaultValue}} = {{#vendorExtensions.x-null-encodable}}{{{vendorExtensions.x-null-encodable-default-value}}}{{/vendorExtensions.x-null-encodable}}{{^vendorExtensions.x-null-encodable}}{{{.}}}{{/vendorExtensions.x-null-encodable}}{{/defaultValue}}
     {{#objcCompatible}}
     {{#vendorExtensions.x-swift-optional-scalar}}
     {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} var {{{name}}}Num: NSNumber? {
         get {
+            {{^vendorExtensions.x-null-encodable}}
             return {{{name}}} as NSNumber?
+            {{/vendorExtensions.x-null-encodable}}
+            {{#vendorExtensions.x-null-encodable}}
+            if case .encodeValue(let value) = {{name}} {
+                return value as NSNumber?
+            } else {
+                return nil
+            }
+            {{/vendorExtensions.x-null-encodable}}
         }
     }
     {{/vendorExtensions.x-swift-optional-scalar}}
@@ -30,7 +39,7 @@
 {{/allVars}}
 {{#hasVars}}
 
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} init({{#allVars}}{{{name}}}: {{{datatypeWithEnum}}}{{#required}}{{#isNullable}}?{{/isNullable}}{{/required}}{{^required}}?{{/required}}{{#defaultValue}} = {{{.}}}{{/defaultValue}}{{^defaultValue}}{{^required}} = nil{{/required}}{{/defaultValue}}{{^-last}}, {{/-last}}{{/allVars}}) {
+    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} init({{#allVars}}{{{name}}}: {{#vendorExtensions.x-null-encodable}}NullEncodable<{{{datatypeWithEnum}}}>{{/vendorExtensions.x-null-encodable}}{{^vendorExtensions.x-null-encodable}}{{{datatypeWithEnum}}}{{#required}}{{#isNullable}}?{{/isNullable}}{{/required}}{{^required}}?{{/required}}{{/vendorExtensions.x-null-encodable}}{{#defaultValue}} = {{#vendorExtensions.x-null-encodable}}{{{vendorExtensions.x-null-encodable-default-value}}}{{/vendorExtensions.x-null-encodable}}{{^vendorExtensions.x-null-encodable}}{{{.}}}{{/vendorExtensions.x-null-encodable}}{{/defaultValue}}{{^defaultValue}}{{^required}} = {{#vendorExtensions.x-null-encodable}}.encodeNull{{/vendorExtensions.x-null-encodable}}{{^vendorExtensions.x-null-encodable}}nil{{/vendorExtensions.x-null-encodable}}{{/required}}{{/defaultValue}}{{^-last}}, {{/-last}}{{/allVars}}) {
         {{#allVars}}
         self.{{{name}}} = {{{name}}}
         {{/allVars}}
@@ -63,7 +72,15 @@
     {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} func encode(to encoder: Encoder) throws {
         var container = encoder.container(keyedBy: CodingKeys.self)
         {{#allVars}}
+        {{#vendorExtensions.x-null-encodable}}
+        switch {{{name}}} {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode({{{name}}}, forKey: .{{{name}}})
+        }
+        {{/vendorExtensions.x-null-encodable}}
+        {{^vendorExtensions.x-null-encodable}}
         try container.encode{{^required}}IfPresent{{/required}}({{{name}}}, forKey: .{{{name}}})
+        {{/vendorExtensions.x-null-encodable}}
         {{/allVars}}
         {{#generateModelAdditionalProperties}}
         {{#additionalPropertiesType}}
@@ -98,7 +115,7 @@
 
     {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} func hash(into hasher: inout Hasher) {
         {{#allVars}}
-        hasher.combine({{{name}}}{{^required}}?{{/required}}.hashValue)
+        hasher.combine({{{name}}}{{^vendorExtensions.x-null-encodable}}{{^required}}?{{/required}}{{/vendorExtensions.x-null-encodable}}.hashValue)
         {{/allVars}}
         {{#generateModelAdditionalProperties}}{{#additionalPropertiesType}}hasher.combine(additionalProperties.hashValue){{/additionalPropertiesType}}{{/generateModelAdditionalProperties}}
     }{{/vendorExtensions.x-swift-hashable}}{{/useClasses}}{{/objcCompatible}}

modules/openapi-generator/src/main/resources/swift5/model_doc.mustache

@@ -3,7 +3,7 @@
 ## Properties
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-{{#vars}}**{{{name}}}** | {{#isPrimitiveType}}**{{{dataType}}}**{{/isPrimitiveType}}{{^isPrimitiveType}}{{^isContainer}}[**{{dataType}}**]({{complexType}}.md){{/isContainer}}{{#isContainer}}{{{dataType}}}{{/isContainer}}{{/isPrimitiveType}} | {{description}} | {{^required}}[optional] {{/required}}{{#isReadOnly}}[readonly] {{/isReadOnly}}{{#defaultValue}}[default to {{{.}}}]{{/defaultValue}}
+{{#vars}}**{{{name}}}** | {{#isPrimitiveType}}**{{{dataType}}}**{{/isPrimitiveType}}{{^isPrimitiveType}}{{^isContainer}}[**{{dataType}}**]({{complexType}}.md){{/isContainer}}{{#isContainer}}{{{dataType}}}{{/isContainer}}{{/isPrimitiveType}} | {{description}} | {{^required}}[optional] {{/required}}{{#isReadOnly}}[readonly] {{/isReadOnly}}{{#defaultValue}}[default to {{#vendorExtensions.x-null-encodable}}.encodeValue({{{.}}}){{/vendorExtensions.x-null-encodable}}{{^vendorExtensions.x-null-encodable}}{{{.}}}{{/vendorExtensions.x-null-encodable}}]{{/defaultValue}}
 {{/vars}}
 
 [[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)

modules/openapi-generator/src/test/resources/2_0/swift/petstore-with-fake-endpoints-models-for-testing.yaml

@@ -1169,6 +1169,8 @@ definitions:
       status:
         type: string
         description: pet status in the store
+        x-null-encodable: true
+        default: null
         enum:
           - available
           - pending
@@ -1212,6 +1214,8 @@ definitions:
         readOnly: true
         type: integer
         format: int32
+        x-null-encodable: true
+        default: 11033
       property:
         type: string
       123Number:

samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models.swift

@@ -37,6 +37,36 @@ extension CaseIterableDefaultsLast {
     }
 }
 
+/// A flexible type that can be encoded (`.encodeNull` or `.encodeValue`)
+/// or not encoded (`.encodeNothing`). Intended for request payloads.
+public enum NullEncodable<Wrapped: Hashable>: Hashable {
+    case encodeNothing
+    case encodeNull
+    case encodeValue(Wrapped)
+}
+
+extension NullEncodable: Codable where Wrapped: Codable {
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        if let value = try? container.decode(Wrapped.self) {
+            self = .encodeValue(value)
+        } else if container.decodeNil() {
+            self = .encodeNull
+        } else {
+            self = .encodeNothing
+        }
+    }
+
+    public func encode(to encoder: Encoder) throws {
+        var container = encoder.singleValueContainer()
+        switch self {
+        case .encodeNothing: return
+        case .encodeNull: try container.encodeNil()
+        case .encodeValue(let wrapped): try container.encode(wrapped)
+        }
+    }
+}
+
 public enum ErrorResponse: Error {
     case error(Int, Data?, URLResponse?, Error)
 }

samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift

@@ -14,11 +14,11 @@ import AnyCodable
 public struct Name: Codable, Hashable {
 
     public var name: Int
-    public var snakeCase: Int?
+    public var snakeCase: NullEncodable<Int> = .encodeValue(11033)
     public var property: String?
     public var _123number: Int?
 
-    public init(name: Int, snakeCase: Int? = nil, property: String? = nil, _123number: Int? = nil) {
+    public init(name: Int, snakeCase: NullEncodable<Int> = .encodeValue(11033), property: String? = nil, _123number: Int? = nil) {
         self.name = name
         self.snakeCase = snakeCase
         self.property = property
@@ -37,7 +37,10 @@ public struct Name: Codable, Hashable {
     public func encode(to encoder: Encoder) throws {
         var container = encoder.container(keyedBy: CodingKeys.self)
         try container.encode(name, forKey: .name)
-        try container.encodeIfPresent(snakeCase, forKey: .snakeCase)
+        switch snakeCase {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(snakeCase, forKey: .snakeCase)
+        }
         try container.encodeIfPresent(property, forKey: .property)
         try container.encodeIfPresent(_123number, forKey: ._123number)
     }

samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift

@@ -23,9 +23,9 @@ public struct Pet: Codable, Hashable {
     public var photoUrls: [String]
     public var tags: [Tag]?
     /** pet status in the store */
-    public var status: Status?
+    public var status: NullEncodable<Status>
 
-    public init(id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: Status? = nil) {
+    public init(id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: NullEncodable<Status> = .encodeNull) {
         self.id = id
         self.category = category
         self.name = name
@@ -52,7 +52,10 @@ public struct Pet: Codable, Hashable {
         try container.encode(name, forKey: .name)
         try container.encode(photoUrls, forKey: .photoUrls)
         try container.encodeIfPresent(tags, forKey: .tags)
-        try container.encodeIfPresent(status, forKey: .status)
+        switch status {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(status, forKey: .status)
+        }
     }
 }
 

samples/client/petstore/swift5/alamofireLibrary/SwaggerClientTests/SwaggerClientTests/PetAPITests.swift

@@ -28,7 +28,7 @@ class PetAPITests: XCTestCase {
         let expectation = self.expectation(description: "testCreatePet")
         let category = Category(id: 1234, name: "eyeColor")
         let tags = [Tag(id: 1234, name: "New York"), Tag(id: 124321, name: "Jose")]
-        let newPet = Pet(id: 1000, category: category, name: "Fluffy", photoUrls: ["https://petstore.com/sample/photo1.jpg", "https://petstore.com/sample/photo2.jpg"], tags: tags, status: .available)
+        let newPet = Pet(id: 1000, category: category, name: "Fluffy", photoUrls: ["https://petstore.com/sample/photo1.jpg", "https://petstore.com/sample/photo2.jpg"], tags: tags, status: .encodeValue(.available))
 
         PetAPI.addPet(body: newPet) { (_, error) in
             guard error == nil else {

samples/client/petstore/swift5/alamofireLibrary/docs/Name.md

@@ -4,7 +4,7 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **name** | **Int** |  | 
-**snakeCase** | **Int** |  | [optional] [readonly] 
+**snakeCase** | **Int** |  | [optional] [readonly] [default to .encodeValue(11033)]
 **property** | **String** |  | [optional] 
 **_123number** | **Int** |  | [optional] [readonly] 
 

samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models.swift

@@ -36,6 +36,36 @@ extension CaseIterableDefaultsLast {
     }
 }
 
+/// A flexible type that can be encoded (`.encodeNull` or `.encodeValue`)
+/// or not encoded (`.encodeNothing`). Intended for request payloads.
+public enum NullEncodable<Wrapped: Hashable>: Hashable {
+    case encodeNothing
+    case encodeNull
+    case encodeValue(Wrapped)
+}
+
+extension NullEncodable: Codable where Wrapped: Codable {
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        if let value = try? container.decode(Wrapped.self) {
+            self = .encodeValue(value)
+        } else if container.decodeNil() {
+            self = .encodeNull
+        } else {
+            self = .encodeNothing
+        }
+    }
+
+    public func encode(to encoder: Encoder) throws {
+        var container = encoder.singleValueContainer()
+        switch self {
+        case .encodeNothing: return
+        case .encodeNull: try container.encodeNil()
+        case .encodeValue(let wrapped): try container.encode(wrapped)
+        }
+    }
+}
+
 public enum ErrorResponse: Error {
     case error(Int, Data?, URLResponse?, Error)
 }

samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift

@@ -14,11 +14,11 @@ import AnyCodable
 public struct Name: Codable, Hashable {
 
     public var name: Int
-    public var snakeCase: Int?
+    public var snakeCase: NullEncodable<Int> = .encodeValue(11033)
     public var property: String?
     public var _123number: Int?
 
-    public init(name: Int, snakeCase: Int? = nil, property: String? = nil, _123number: Int? = nil) {
+    public init(name: Int, snakeCase: NullEncodable<Int> = .encodeValue(11033), property: String? = nil, _123number: Int? = nil) {
         self.name = name
         self.snakeCase = snakeCase
         self.property = property
@@ -37,7 +37,10 @@ public struct Name: Codable, Hashable {
     public func encode(to encoder: Encoder) throws {
         var container = encoder.container(keyedBy: CodingKeys.self)
         try container.encode(name, forKey: .name)
-        try container.encodeIfPresent(snakeCase, forKey: .snakeCase)
+        switch snakeCase {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(snakeCase, forKey: .snakeCase)
+        }
         try container.encodeIfPresent(property, forKey: .property)
         try container.encodeIfPresent(_123number, forKey: ._123number)
     }

samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift

@@ -23,9 +23,9 @@ public struct Pet: Codable, Hashable {
     public var photoUrls: [String]
     public var tags: [Tag]?
     /** pet status in the store */
-    public var status: Status?
+    public var status: NullEncodable<Status>
 
-    public init(id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: Status? = nil) {
+    public init(id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: NullEncodable<Status> = .encodeNull) {
         self.id = id
         self.category = category
         self.name = name
@@ -52,7 +52,10 @@ public struct Pet: Codable, Hashable {
         try container.encode(name, forKey: .name)
         try container.encode(photoUrls, forKey: .photoUrls)
         try container.encodeIfPresent(tags, forKey: .tags)
-        try container.encodeIfPresent(status, forKey: .status)
+        switch status {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(status, forKey: .status)
+        }
     }
 }
 

samples/client/petstore/swift5/asyncAwaitLibrary/docs/Name.md

@@ -4,7 +4,7 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **name** | **Int** |  | 
-**snakeCase** | **Int** |  | [optional] [readonly] 
+**snakeCase** | **Int** |  | [optional] [readonly] [default to .encodeValue(11033)]
 **property** | **String** |  | [optional] 
 **_123number** | **Int** |  | [optional] [readonly] 
 

samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models.swift

@@ -36,6 +36,36 @@ extension CaseIterableDefaultsLast {
     }
 }
 
+/// A flexible type that can be encoded (`.encodeNull` or `.encodeValue`)
+/// or not encoded (`.encodeNothing`). Intended for request payloads.
+public enum NullEncodable<Wrapped: Hashable>: Hashable {
+    case encodeNothing
+    case encodeNull
+    case encodeValue(Wrapped)
+}
+
+extension NullEncodable: Codable where Wrapped: Codable {
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        if let value = try? container.decode(Wrapped.self) {
+            self = .encodeValue(value)
+        } else if container.decodeNil() {
+            self = .encodeNull
+        } else {
+            self = .encodeNothing
+        }
+    }
+
+    public func encode(to encoder: Encoder) throws {
+        var container = encoder.singleValueContainer()
+        switch self {
+        case .encodeNothing: return
+        case .encodeNull: try container.encodeNil()
+        case .encodeValue(let wrapped): try container.encode(wrapped)
+        }
+    }
+}
+
 public enum ErrorResponse: Error {
     case error(Int, Data?, URLResponse?, Error)
 }

samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift

@@ -14,11 +14,11 @@ import AnyCodable
 public struct Name: Codable, Hashable {
 
     public var name: Int
-    public var snakeCase: Int?
+    public var snakeCase: NullEncodable<Int> = .encodeValue(11033)
     public var property: String?
     public var _123number: Int?
 
-    public init(name: Int, snakeCase: Int? = nil, property: String? = nil, _123number: Int? = nil) {
+    public init(name: Int, snakeCase: NullEncodable<Int> = .encodeValue(11033), property: String? = nil, _123number: Int? = nil) {
         self.name = name
         self.snakeCase = snakeCase
         self.property = property
@@ -37,7 +37,10 @@ public struct Name: Codable, Hashable {
     public func encode(to encoder: Encoder) throws {
         var container = encoder.container(keyedBy: CodingKeys.self)
         try container.encode(name, forKey: .name)
-        try container.encodeIfPresent(snakeCase, forKey: .snakeCase)
+        switch snakeCase {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(snakeCase, forKey: .snakeCase)
+        }
         try container.encodeIfPresent(property, forKey: .property)
         try container.encodeIfPresent(_123number, forKey: ._123number)
     }

samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift

@@ -23,9 +23,9 @@ public struct Pet: Codable, Hashable {
     public var photoUrls: [String]
     public var tags: [Tag]?
     /** pet status in the store */
-    public var status: Status?
+    public var status: NullEncodable<Status>
 
-    public init(id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: Status? = nil) {
+    public init(id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: NullEncodable<Status> = .encodeNull) {
         self.id = id
         self.category = category
         self.name = name
@@ -52,7 +52,10 @@ public struct Pet: Codable, Hashable {
         try container.encode(name, forKey: .name)
         try container.encode(photoUrls, forKey: .photoUrls)
         try container.encodeIfPresent(tags, forKey: .tags)
-        try container.encodeIfPresent(status, forKey: .status)
+        switch status {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(status, forKey: .status)
+        }
     }
 }
 

samples/client/petstore/swift5/combineLibrary/SwaggerClientTests/SwaggerClientTests/PetAPITests.swift

@@ -32,7 +32,7 @@ class PetAPITests: XCTestCase {
         let expectation = self.expectation(description: "testCreatePet")
         let category = Category(id: 1234, name: "eyeColor")
         let tags = [Tag(id: 1234, name: "New York"), Tag(id: 124321, name: "Jose")]
-        let newPet = Pet(id: 1000, category: category, name: "Fluffy", photoUrls: ["https://petstore.com/sample/photo1.jpg", "https://petstore.com/sample/photo2.jpg"], tags: tags, status: .available)
+        let newPet = Pet(id: 1000, category: category, name: "Fluffy", photoUrls: ["https://petstore.com/sample/photo1.jpg", "https://petstore.com/sample/photo2.jpg"], tags: tags, status: .encodeValue(.available))
 
         PetAPI.addPet(body: newPet).sink(receiveCompletion: { (completion) in
             switch completion {

samples/client/petstore/swift5/combineLibrary/docs/Name.md

@@ -4,7 +4,7 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **name** | **Int** |  | 
-**snakeCase** | **Int** |  | [optional] [readonly] 
+**snakeCase** | **Int** |  | [optional] [readonly] [default to .encodeValue(11033)]
 **property** | **String** |  | [optional] 
 **_123number** | **Int** |  | [optional] [readonly] 
 

samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models.swift

@@ -36,6 +36,36 @@ extension CaseIterableDefaultsLast {
     }
 }
 
+/// A flexible type that can be encoded (`.encodeNull` or `.encodeValue`)
+/// or not encoded (`.encodeNothing`). Intended for request payloads.
+public enum NullEncodable<Wrapped: Hashable>: Hashable {
+    case encodeNothing
+    case encodeNull
+    case encodeValue(Wrapped)
+}
+
+extension NullEncodable: Codable where Wrapped: Codable {
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        if let value = try? container.decode(Wrapped.self) {
+            self = .encodeValue(value)
+        } else if container.decodeNil() {
+            self = .encodeNull
+        } else {
+            self = .encodeNothing
+        }
+    }
+
+    public func encode(to encoder: Encoder) throws {
+        var container = encoder.singleValueContainer()
+        switch self {
+        case .encodeNothing: return
+        case .encodeNull: try container.encodeNil()
+        case .encodeValue(let wrapped): try container.encode(wrapped)
+        }
+    }
+}
+
 public enum ErrorResponse: Error {
     case error(Int, Data?, URLResponse?, Error)
 }

samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models.swift

@@ -36,6 +36,36 @@ extension CaseIterableDefaultsLast {
     }
 }
 
+/// A flexible type that can be encoded (`.encodeNull` or `.encodeValue`)
+/// or not encoded (`.encodeNothing`). Intended for request payloads.
+public enum NullEncodable<Wrapped: Hashable>: Hashable {
+    case encodeNothing
+    case encodeNull
+    case encodeValue(Wrapped)
+}
+
+extension NullEncodable: Codable where Wrapped: Codable {
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        if let value = try? container.decode(Wrapped.self) {
+            self = .encodeValue(value)
+        } else if container.decodeNil() {
+            self = .encodeNull
+        } else {
+            self = .encodeNothing
+        }
+    }
+
+    public func encode(to encoder: Encoder) throws {
+        var container = encoder.singleValueContainer()
+        switch self {
+        case .encodeNothing: return
+        case .encodeNull: try container.encodeNil()
+        case .encodeValue(let wrapped): try container.encode(wrapped)
+        }
+    }
+}
+
 public enum ErrorResponse: Error {
     case error(Int, Data?, URLResponse?, Error)
 }

samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models.swift

@@ -36,6 +36,36 @@ extension CaseIterableDefaultsLast {
     }
 }
 
+/// A flexible type that can be encoded (`.encodeNull` or `.encodeValue`)
+/// or not encoded (`.encodeNothing`). Intended for request payloads.
+public enum NullEncodable<Wrapped: Hashable>: Hashable {
+    case encodeNothing
+    case encodeNull
+    case encodeValue(Wrapped)
+}
+
+extension NullEncodable: Codable where Wrapped: Codable {
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        if let value = try? container.decode(Wrapped.self) {
+            self = .encodeValue(value)
+        } else if container.decodeNil() {
+            self = .encodeNull
+        } else {
+            self = .encodeNothing
+        }
+    }
+
+    public func encode(to encoder: Encoder) throws {
+        var container = encoder.singleValueContainer()
+        switch self {
+        case .encodeNothing: return
+        case .encodeNull: try container.encodeNil()
+        case .encodeValue(let wrapped): try container.encode(wrapped)
+        }
+    }
+}
+
 public enum ErrorResponse: Error {
     case error(Int, Data?, URLResponse?, Error)
 }

samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Name.swift

@@ -14,11 +14,11 @@ import AnyCodable
 public struct Name: Codable, Hashable {
 
     public var name: Int
-    public var snakeCase: Int?
+    public var snakeCase: NullEncodable<Int> = .encodeValue(11033)
     public var property: String?
     public var _123number: Int?
 
-    public init(name: Int, snakeCase: Int? = nil, property: String? = nil, _123number: Int? = nil) {
+    public init(name: Int, snakeCase: NullEncodable<Int> = .encodeValue(11033), property: String? = nil, _123number: Int? = nil) {
         self.name = name
         self.snakeCase = snakeCase
         self.property = property
@@ -37,7 +37,10 @@ public struct Name: Codable, Hashable {
     public func encode(to encoder: Encoder) throws {
         var container = encoder.container(keyedBy: CodingKeys.self)
         try container.encode(name, forKey: .name)
-        try container.encodeIfPresent(snakeCase, forKey: .snakeCase)
+        switch snakeCase {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(snakeCase, forKey: .snakeCase)
+        }
         try container.encodeIfPresent(property, forKey: .property)
         try container.encodeIfPresent(_123number, forKey: ._123number)
     }

samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift

@@ -24,9 +24,9 @@ public struct Pet: Codable, Hashable {
     public var photoUrls: [String]
     public var tags: [Tag]?
     /** pet status in the store */
-    public var status: Status?
+    public var status: NullEncodable<Status>
 
-    public init(id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: Status? = nil) {
+    public init(id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: NullEncodable<Status> = .encodeNull) {
         self.id = id
         self.category = category
         self.name = name
@@ -53,7 +53,10 @@ public struct Pet: Codable, Hashable {
         try container.encode(name, forKey: .name)
         try container.encode(photoUrls, forKey: .photoUrls)
         try container.encodeIfPresent(tags, forKey: .tags)
-        try container.encodeIfPresent(status, forKey: .status)
+        switch status {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(status, forKey: .status)
+        }
     }
 }
 

samples/client/petstore/swift5/frozenEnums/docs/Name.md

@@ -4,7 +4,7 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **name** | **Int** |  | 
-**snakeCase** | **Int** |  | [optional] [readonly] 
+**snakeCase** | **Int** |  | [optional] [readonly] [default to .encodeValue(11033)]
 **property** | **String** |  | [optional] 
 **_123number** | **Int** |  | [optional] [readonly] 
 

samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models.swift

@@ -36,6 +36,36 @@ extension CaseIterableDefaultsLast {
     }
 }
 
+/// A flexible type that can be encoded (`.encodeNull` or `.encodeValue`)
+/// or not encoded (`.encodeNothing`). Intended for request payloads.
+public enum NullEncodable<Wrapped: Hashable>: Hashable {
+    case encodeNothing
+    case encodeNull
+    case encodeValue(Wrapped)
+}
+
+extension NullEncodable: Codable where Wrapped: Codable {
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        if let value = try? container.decode(Wrapped.self) {
+            self = .encodeValue(value)
+        } else if container.decodeNil() {
+            self = .encodeNull
+        } else {
+            self = .encodeNothing
+        }
+    }
+
+    public func encode(to encoder: Encoder) throws {
+        var container = encoder.singleValueContainer()
+        switch self {
+        case .encodeNothing: return
+        case .encodeNull: try container.encodeNil()
+        case .encodeValue(let wrapped): try container.encode(wrapped)
+        }
+    }
+}
+
 internal enum ErrorResponse: Error {
     case error(Int, Data?, URLResponse?, Error)
 }

samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Name.swift

@@ -14,11 +14,11 @@ import AnyCodable
 internal struct Name: Codable, Hashable {
 
     internal var name: Int
-    internal var snakeCase: Int?
+    internal var snakeCase: NullEncodable<Int> = .encodeValue(11033)
     internal var property: String?
     internal var _123number: Int?
 
-    internal init(name: Int, snakeCase: Int? = nil, property: String? = nil, _123number: Int? = nil) {
+    internal init(name: Int, snakeCase: NullEncodable<Int> = .encodeValue(11033), property: String? = nil, _123number: Int? = nil) {
         self.name = name
         self.snakeCase = snakeCase
         self.property = property
@@ -37,7 +37,10 @@ internal struct Name: Codable, Hashable {
     internal func encode(to encoder: Encoder) throws {
         var container = encoder.container(keyedBy: CodingKeys.self)
         try container.encode(name, forKey: .name)
-        try container.encodeIfPresent(snakeCase, forKey: .snakeCase)
+        switch snakeCase {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(snakeCase, forKey: .snakeCase)
+        }
         try container.encodeIfPresent(property, forKey: .property)
         try container.encodeIfPresent(_123number, forKey: ._123number)
     }

samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift

@@ -23,9 +23,9 @@ internal struct Pet: Codable, Hashable {
     internal var photoUrls: [String]
     internal var tags: [Tag]?
     /** pet status in the store */
-    internal var status: Status?
+    internal var status: NullEncodable<Status>
 
-    internal init(id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: Status? = nil) {
+    internal init(id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: NullEncodable<Status> = .encodeNull) {
         self.id = id
         self.category = category
         self.name = name
@@ -52,7 +52,10 @@ internal struct Pet: Codable, Hashable {
         try container.encode(name, forKey: .name)
         try container.encode(photoUrls, forKey: .photoUrls)
         try container.encodeIfPresent(tags, forKey: .tags)
-        try container.encodeIfPresent(status, forKey: .status)
+        switch status {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(status, forKey: .status)
+        }
     }
 }
 

samples/client/petstore/swift5/nonPublicApi/docs/Name.md

@@ -4,7 +4,7 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **name** | **Int** |  | 
-**snakeCase** | **Int** |  | [optional] [readonly] 
+**snakeCase** | **Int** |  | [optional] [readonly] [default to .encodeValue(11033)]
 **property** | **String** |  | [optional] 
 **_123number** | **Int** |  | [optional] [readonly] 
 

samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models.swift

@@ -36,6 +36,36 @@ extension CaseIterableDefaultsLast {
     }
 }
 
+/// A flexible type that can be encoded (`.encodeNull` or `.encodeValue`)
+/// or not encoded (`.encodeNothing`). Intended for request payloads.
+public enum NullEncodable<Wrapped: Hashable>: Hashable {
+    case encodeNothing
+    case encodeNull
+    case encodeValue(Wrapped)
+}
+
+extension NullEncodable: Codable where Wrapped: Codable {
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        if let value = try? container.decode(Wrapped.self) {
+            self = .encodeValue(value)
+        } else if container.decodeNil() {
+            self = .encodeNull
+        } else {
+            self = .encodeNothing
+        }
+    }
+
+    public func encode(to encoder: Encoder) throws {
+        var container = encoder.singleValueContainer()
+        switch self {
+        case .encodeNothing: return
+        case .encodeNull: try container.encodeNil()
+        case .encodeValue(let wrapped): try container.encode(wrapped)
+        }
+    }
+}
+
 public enum ErrorResponse: Error {
     case error(Int, Data?, URLResponse?, Error)
 }

samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Name.swift

@@ -14,10 +14,14 @@ import AnyCodable
 @objc public class Name: NSObject, Codable {
 
     public var name: Int
-    public var snakeCase: Int?
+    public var snakeCase: NullEncodable<Int> = .encodeValue(11033)
     public var snakeCaseNum: NSNumber? {
         get {
-            return snakeCase as NSNumber?
+            if case .encodeValue(let value) = snakeCase {
+                return value as NSNumber?
+            } else {
+                return nil
+            }
         }
     }
     public var property: String?
@@ -28,7 +32,7 @@ import AnyCodable
         }
     }
 
-    public init(name: Int, snakeCase: Int? = nil, property: String? = nil, _123number: Int? = nil) {
+    public init(name: Int, snakeCase: NullEncodable<Int> = .encodeValue(11033), property: String? = nil, _123number: Int? = nil) {
         self.name = name
         self.snakeCase = snakeCase
         self.property = property
@@ -47,7 +51,10 @@ import AnyCodable
     public func encode(to encoder: Encoder) throws {
         var container = encoder.container(keyedBy: CodingKeys.self)
         try container.encode(name, forKey: .name)
-        try container.encodeIfPresent(snakeCase, forKey: .snakeCase)
+        switch snakeCase {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(snakeCase, forKey: .snakeCase)
+        }
         try container.encodeIfPresent(property, forKey: .property)
         try container.encodeIfPresent(_123number, forKey: ._123number)
     }

samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift

@@ -28,9 +28,9 @@ import AnyCodable
     public var photoUrls: [String]
     public var tags: [Tag]?
     /** pet status in the store */
-    public var status: Status?
+    public var status: NullEncodable<Status>
 
-    public init(_id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: Status? = nil) {
+    public init(_id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: NullEncodable<Status> = .encodeNull) {
         self._id = _id
         self.category = category
         self.name = name
@@ -57,7 +57,10 @@ import AnyCodable
         try container.encode(name, forKey: .name)
         try container.encode(photoUrls, forKey: .photoUrls)
         try container.encodeIfPresent(tags, forKey: .tags)
-        try container.encodeIfPresent(status, forKey: .status)
+        switch status {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(status, forKey: .status)
+        }
     }
 }
 

samples/client/petstore/swift5/objcCompatible/docs/Name.md

@@ -4,7 +4,7 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **name** | **Int** |  | 
-**snakeCase** | **Int** |  | [optional] [readonly] 
+**snakeCase** | **Int** |  | [optional] [readonly] [default to .encodeValue(11033)]
 **property** | **String** |  | [optional] 
 **_123number** | **Int** |  | [optional] [readonly] 
 

samples/client/petstore/swift5/oneOf/PetstoreClient/Classes/OpenAPIs/Models.swift

@@ -36,6 +36,36 @@ extension CaseIterableDefaultsLast {
     }
 }
 
+/// A flexible type that can be encoded (`.encodeNull` or `.encodeValue`)
+/// or not encoded (`.encodeNothing`). Intended for request payloads.
+public enum NullEncodable<Wrapped: Hashable>: Hashable {
+    case encodeNothing
+    case encodeNull
+    case encodeValue(Wrapped)
+}
+
+extension NullEncodable: Codable where Wrapped: Codable {
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        if let value = try? container.decode(Wrapped.self) {
+            self = .encodeValue(value)
+        } else if container.decodeNil() {
+            self = .encodeNull
+        } else {
+            self = .encodeNothing
+        }
+    }
+
+    public func encode(to encoder: Encoder) throws {
+        var container = encoder.singleValueContainer()
+        switch self {
+        case .encodeNothing: return
+        case .encodeNull: try container.encodeNil()
+        case .encodeValue(let wrapped): try container.encode(wrapped)
+        }
+    }
+}
+
 public enum ErrorResponse: Error {
     case error(Int, Data?, URLResponse?, Error)
 }

samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models.swift

@@ -36,6 +36,36 @@ extension CaseIterableDefaultsLast {
     }
 }
 
+/// A flexible type that can be encoded (`.encodeNull` or `.encodeValue`)
+/// or not encoded (`.encodeNothing`). Intended for request payloads.
+public enum NullEncodable<Wrapped: Hashable>: Hashable {
+    case encodeNothing
+    case encodeNull
+    case encodeValue(Wrapped)
+}
+
+extension NullEncodable: Codable where Wrapped: Codable {
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        if let value = try? container.decode(Wrapped.self) {
+            self = .encodeValue(value)
+        } else if container.decodeNil() {
+            self = .encodeNull
+        } else {
+            self = .encodeNothing
+        }
+    }
+
+    public func encode(to encoder: Encoder) throws {
+        var container = encoder.singleValueContainer()
+        switch self {
+        case .encodeNothing: return
+        case .encodeNull: try container.encodeNil()
+        case .encodeValue(let wrapped): try container.encode(wrapped)
+        }
+    }
+}
+
 public enum ErrorResponse: Error {
     case error(Int, Data?, URLResponse?, Error)
 }

samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift

@@ -14,11 +14,11 @@ import AnyCodable
 public struct Name: Codable, Hashable {
 
     public var name: Int
-    public var snakeCase: Int?
+    public var snakeCase: NullEncodable<Int> = .encodeValue(11033)
     public var property: String?
     public var _123number: Int?
 
-    public init(name: Int, snakeCase: Int? = nil, property: String? = nil, _123number: Int? = nil) {
+    public init(name: Int, snakeCase: NullEncodable<Int> = .encodeValue(11033), property: String? = nil, _123number: Int? = nil) {
         self.name = name
         self.snakeCase = snakeCase
         self.property = property
@@ -37,7 +37,10 @@ public struct Name: Codable, Hashable {
     public func encode(to encoder: Encoder) throws {
         var container = encoder.container(keyedBy: CodingKeys.self)
         try container.encode(name, forKey: .name)
-        try container.encodeIfPresent(snakeCase, forKey: .snakeCase)
+        switch snakeCase {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(snakeCase, forKey: .snakeCase)
+        }
         try container.encodeIfPresent(property, forKey: .property)
         try container.encodeIfPresent(_123number, forKey: ._123number)
     }

samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift

@@ -23,9 +23,9 @@ public struct Pet: Codable, Hashable {
     public var photoUrls: [String]
     public var tags: [Tag]?
     /** pet status in the store */
-    public var status: Status?
+    public var status: NullEncodable<Status>
 
-    public init(id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: Status? = nil) {
+    public init(id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: NullEncodable<Status> = .encodeNull) {
         self.id = id
         self.category = category
         self.name = name
@@ -52,7 +52,10 @@ public struct Pet: Codable, Hashable {
         try container.encode(name, forKey: .name)
         try container.encode(photoUrls, forKey: .photoUrls)
         try container.encodeIfPresent(tags, forKey: .tags)
-        try container.encodeIfPresent(status, forKey: .status)
+        switch status {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(status, forKey: .status)
+        }
     }
 }
 

samples/client/petstore/swift5/promisekitLibrary/SwaggerClientTests/SwaggerClientTests/PetAPITests.swift

@@ -29,7 +29,7 @@ class PetAPITests: XCTestCase {
         let expectation = self.expectation(description: "testCreatePet")
         let category = Category(id: 1234, name: "eyeColor")
         let tags = [Tag(id: 1234, name: "New York"), Tag(id: 124321, name: "Jose")]
-        let newPet = Pet(id: 1000, category: category, name: "Fluffy", photoUrls: ["https://petstore.com/sample/photo1.jpg", "https://petstore.com/sample/photo2.jpg"], tags: tags, status: .available)
+        let newPet = Pet(id: 1000, category: category, name: "Fluffy", photoUrls: ["https://petstore.com/sample/photo1.jpg", "https://petstore.com/sample/photo2.jpg"], tags: tags, status: .encodeValue(.available))
 
         PetAPI.addPet(body: newPet).done {
                 expectation.fulfill()

samples/client/petstore/swift5/promisekitLibrary/docs/Name.md

@@ -4,7 +4,7 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **name** | **Int** |  | 
-**snakeCase** | **Int** |  | [optional] [readonly] 
+**snakeCase** | **Int** |  | [optional] [readonly] [default to .encodeValue(11033)]
 **property** | **String** |  | [optional] 
 **_123number** | **Int** |  | [optional] [readonly] 
 

samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models.swift

@@ -36,6 +36,36 @@ extension CaseIterableDefaultsLast {
     }
 }
 
+/// A flexible type that can be encoded (`.encodeNull` or `.encodeValue`)
+/// or not encoded (`.encodeNothing`). Intended for request payloads.
+public enum NullEncodable<Wrapped: Hashable>: Hashable {
+    case encodeNothing
+    case encodeNull
+    case encodeValue(Wrapped)
+}
+
+extension NullEncodable: Codable where Wrapped: Codable {
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        if let value = try? container.decode(Wrapped.self) {
+            self = .encodeValue(value)
+        } else if container.decodeNil() {
+            self = .encodeNull
+        } else {
+            self = .encodeNothing
+        }
+    }
+
+    public func encode(to encoder: Encoder) throws {
+        var container = encoder.singleValueContainer()
+        switch self {
+        case .encodeNothing: return
+        case .encodeNull: try container.encodeNil()
+        case .encodeValue(let wrapped): try container.encode(wrapped)
+        }
+    }
+}
+
 public enum ErrorResponse: Error {
     case error(Int, Data?, URLResponse?, Error)
 }

samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Name.swift

@@ -14,11 +14,11 @@ import AnyCodable
 public struct Name: Codable, Hashable {
 
     public private(set) var name: Int
-    public private(set) var snakeCase: Int?
+    public private(set) var snakeCase: NullEncodable<Int> = .encodeValue(11033)
     public private(set) var property: String?
     public private(set) var _123number: Int?
 
-    public init(name: Int, snakeCase: Int? = nil, property: String? = nil, _123number: Int? = nil) {
+    public init(name: Int, snakeCase: NullEncodable<Int> = .encodeValue(11033), property: String? = nil, _123number: Int? = nil) {
         self.name = name
         self.snakeCase = snakeCase
         self.property = property
@@ -37,7 +37,10 @@ public struct Name: Codable, Hashable {
     public func encode(to encoder: Encoder) throws {
         var container = encoder.container(keyedBy: CodingKeys.self)
         try container.encode(name, forKey: .name)
-        try container.encodeIfPresent(snakeCase, forKey: .snakeCase)
+        switch snakeCase {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(snakeCase, forKey: .snakeCase)
+        }
         try container.encodeIfPresent(property, forKey: .property)
         try container.encodeIfPresent(_123number, forKey: ._123number)
     }

samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift

@@ -23,9 +23,9 @@ public struct Pet: Codable, Hashable {
     public private(set) var photoUrls: [String]
     public private(set) var tags: [Tag]?
     /** pet status in the store */
-    public private(set) var status: Status?
+    public private(set) var status: NullEncodable<Status>
 
-    public init(id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: Status? = nil) {
+    public init(id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: NullEncodable<Status> = .encodeNull) {
         self.id = id
         self.category = category
         self.name = name
@@ -52,7 +52,10 @@ public struct Pet: Codable, Hashable {
         try container.encode(name, forKey: .name)
         try container.encode(photoUrls, forKey: .photoUrls)
         try container.encodeIfPresent(tags, forKey: .tags)
-        try container.encodeIfPresent(status, forKey: .status)
+        switch status {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(status, forKey: .status)
+        }
     }
 }
 

samples/client/petstore/swift5/readonlyProperties/docs/Name.md

@@ -4,7 +4,7 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **name** | **Int** |  | 
-**snakeCase** | **Int** |  | [optional] [readonly] 
+**snakeCase** | **Int** |  | [optional] [readonly] [default to .encodeValue(11033)]
 **property** | **String** |  | [optional] 
 **_123number** | **Int** |  | [optional] [readonly] 
 

samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models.swift

@@ -36,6 +36,36 @@ extension CaseIterableDefaultsLast {
     }
 }
 
+/// A flexible type that can be encoded (`.encodeNull` or `.encodeValue`)
+/// or not encoded (`.encodeNothing`). Intended for request payloads.
+public enum NullEncodable<Wrapped: Hashable>: Hashable {
+    case encodeNothing
+    case encodeNull
+    case encodeValue(Wrapped)
+}
+
+extension NullEncodable: Codable where Wrapped: Codable {
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        if let value = try? container.decode(Wrapped.self) {
+            self = .encodeValue(value)
+        } else if container.decodeNil() {
+            self = .encodeNull
+        } else {
+            self = .encodeNothing
+        }
+    }
+
+    public func encode(to encoder: Encoder) throws {
+        var container = encoder.singleValueContainer()
+        switch self {
+        case .encodeNothing: return
+        case .encodeNull: try container.encodeNil()
+        case .encodeValue(let wrapped): try container.encode(wrapped)
+        }
+    }
+}
+
 public enum ErrorResponse: Error {
     case error(Int, Data?, URLResponse?, Error)
 }

samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift

@@ -14,11 +14,11 @@ import AnyCodable
 public struct Name: Codable, Hashable {
 
     public var name: Int
-    public var snakeCase: Int?
+    public var snakeCase: NullEncodable<Int> = .encodeValue(11033)
     public var property: String?
     public var _123number: Int?
 
-    public init(name: Int, snakeCase: Int? = nil, property: String? = nil, _123number: Int? = nil) {
+    public init(name: Int, snakeCase: NullEncodable<Int> = .encodeValue(11033), property: String? = nil, _123number: Int? = nil) {
         self.name = name
         self.snakeCase = snakeCase
         self.property = property
@@ -37,7 +37,10 @@ public struct Name: Codable, Hashable {
     public func encode(to encoder: Encoder) throws {
         var container = encoder.container(keyedBy: CodingKeys.self)
         try container.encode(name, forKey: .name)
-        try container.encodeIfPresent(snakeCase, forKey: .snakeCase)
+        switch snakeCase {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(snakeCase, forKey: .snakeCase)
+        }
         try container.encodeIfPresent(property, forKey: .property)
         try container.encodeIfPresent(_123number, forKey: ._123number)
     }

samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift

@@ -23,9 +23,9 @@ public struct Pet: Codable, Hashable {
     public var photoUrls: [String]
     public var tags: [Tag]?
     /** pet status in the store */
-    public var status: Status?
+    public var status: NullEncodable<Status>
 
-    public init(id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: Status? = nil) {
+    public init(id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: NullEncodable<Status> = .encodeNull) {
         self.id = id
         self.category = category
         self.name = name
@@ -52,7 +52,10 @@ public struct Pet: Codable, Hashable {
         try container.encode(name, forKey: .name)
         try container.encode(photoUrls, forKey: .photoUrls)
         try container.encodeIfPresent(tags, forKey: .tags)
-        try container.encodeIfPresent(status, forKey: .status)
+        switch status {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(status, forKey: .status)
+        }
     }
 }
 

samples/client/petstore/swift5/resultLibrary/docs/Name.md

@@ -4,7 +4,7 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **name** | **Int** |  | 
-**snakeCase** | **Int** |  | [optional] [readonly] 
+**snakeCase** | **Int** |  | [optional] [readonly] [default to .encodeValue(11033)]
 **property** | **String** |  | [optional] 
 **_123number** | **Int** |  | [optional] [readonly] 
 

samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models.swift

@@ -36,6 +36,36 @@ extension CaseIterableDefaultsLast {
     }
 }
 
+/// A flexible type that can be encoded (`.encodeNull` or `.encodeValue`)
+/// or not encoded (`.encodeNothing`). Intended for request payloads.
+public enum NullEncodable<Wrapped: Hashable>: Hashable {
+    case encodeNothing
+    case encodeNull
+    case encodeValue(Wrapped)
+}
+
+extension NullEncodable: Codable where Wrapped: Codable {
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        if let value = try? container.decode(Wrapped.self) {
+            self = .encodeValue(value)
+        } else if container.decodeNil() {
+            self = .encodeNull
+        } else {
+            self = .encodeNothing
+        }
+    }
+
+    public func encode(to encoder: Encoder) throws {
+        var container = encoder.singleValueContainer()
+        switch self {
+        case .encodeNothing: return
+        case .encodeNull: try container.encodeNil()
+        case .encodeValue(let wrapped): try container.encode(wrapped)
+        }
+    }
+}
+
 public enum ErrorResponse: Error {
     case error(Int, Data?, URLResponse?, Error)
 }

samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift

@@ -14,11 +14,11 @@ import AnyCodable
 public struct Name: Codable, Hashable {
 
     public var name: Int
-    public var snakeCase: Int?
+    public var snakeCase: NullEncodable<Int> = .encodeValue(11033)
     public var property: String?
     public var _123number: Int?
 
-    public init(name: Int, snakeCase: Int? = nil, property: String? = nil, _123number: Int? = nil) {
+    public init(name: Int, snakeCase: NullEncodable<Int> = .encodeValue(11033), property: String? = nil, _123number: Int? = nil) {
         self.name = name
         self.snakeCase = snakeCase
         self.property = property
@@ -37,7 +37,10 @@ public struct Name: Codable, Hashable {
     public func encode(to encoder: Encoder) throws {
         var container = encoder.container(keyedBy: CodingKeys.self)
         try container.encode(name, forKey: .name)
-        try container.encodeIfPresent(snakeCase, forKey: .snakeCase)
+        switch snakeCase {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(snakeCase, forKey: .snakeCase)
+        }
         try container.encodeIfPresent(property, forKey: .property)
         try container.encodeIfPresent(_123number, forKey: ._123number)
     }

samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift

@@ -23,9 +23,9 @@ public struct Pet: Codable, Hashable {
     public var photoUrls: [String]
     public var tags: [Tag]?
     /** pet status in the store */
-    public var status: Status?
+    public var status: NullEncodable<Status>
 
-    public init(id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: Status? = nil) {
+    public init(id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: NullEncodable<Status> = .encodeNull) {
         self.id = id
         self.category = category
         self.name = name
@@ -52,7 +52,10 @@ public struct Pet: Codable, Hashable {
         try container.encode(name, forKey: .name)
         try container.encode(photoUrls, forKey: .photoUrls)
         try container.encodeIfPresent(tags, forKey: .tags)
-        try container.encodeIfPresent(status, forKey: .status)
+        switch status {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(status, forKey: .status)
+        }
     }
 }
 

samples/client/petstore/swift5/rxswiftLibrary/SwaggerClientTests/SwaggerClientTests/PetAPITests.swift

@@ -30,7 +30,7 @@ class PetAPITests: XCTestCase {
         let expectation = self.expectation(description: "testCreatePet")
         let category = Category(id: 1234, name: "eyeColor")
         let tags = [Tag(id: 1234, name: "New York"), Tag(id: 124321, name: "Jose")]
-        let newPet = Pet(id: 1000, category: category, name: "Fluffy", photoUrls: ["https://petstore.com/sample/photo1.jpg", "https://petstore.com/sample/photo2.jpg"], tags: tags, status: .available)
+        let newPet = Pet(id: 1000, category: category, name: "Fluffy", photoUrls: ["https://petstore.com/sample/photo1.jpg", "https://petstore.com/sample/photo2.jpg"], tags: tags, status: .encodeValue(.available))
 
         PetAPI.addPet(body: newPet).subscribe(onNext: {
             expectation.fulfill()

samples/client/petstore/swift5/rxswiftLibrary/docs/Name.md

@@ -4,7 +4,7 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **name** | **Int** |  | 
-**snakeCase** | **Int** |  | [optional] [readonly] 
+**snakeCase** | **Int** |  | [optional] [readonly] [default to .encodeValue(11033)]
 **property** | **String** |  | [optional] 
 **_123number** | **Int** |  | [optional] [readonly] 
 

samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models.swift

@@ -36,6 +36,36 @@ extension CaseIterableDefaultsLast {
     }
 }
 
+/// A flexible type that can be encoded (`.encodeNull` or `.encodeValue`)
+/// or not encoded (`.encodeNothing`). Intended for request payloads.
+public enum NullEncodable<Wrapped: Hashable>: Hashable {
+    case encodeNothing
+    case encodeNull
+    case encodeValue(Wrapped)
+}
+
+extension NullEncodable: Codable where Wrapped: Codable {
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        if let value = try? container.decode(Wrapped.self) {
+            self = .encodeValue(value)
+        } else if container.decodeNil() {
+            self = .encodeNull
+        } else {
+            self = .encodeNothing
+        }
+    }
+
+    public func encode(to encoder: Encoder) throws {
+        var container = encoder.singleValueContainer()
+        switch self {
+        case .encodeNothing: return
+        case .encodeNull: try container.encodeNil()
+        case .encodeValue(let wrapped): try container.encode(wrapped)
+        }
+    }
+}
+
 public enum ErrorResponse: Error {
     case error(Int, Data?, URLResponse?, Error)
 }

samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Name.swift

@@ -19,11 +19,11 @@ extension PetstoreClientAPI {
 public final class Name: Codable, Hashable {
 
     public var name: Int
-    public var snakeCase: Int?
+    public var snakeCase: NullEncodable<Int> = .encodeValue(11033)
     public var property: String?
     public var _123number: Int?
 
-    public init(name: Int, snakeCase: Int? = nil, property: String? = nil, _123number: Int? = nil) {
+    public init(name: Int, snakeCase: NullEncodable<Int> = .encodeValue(11033), property: String? = nil, _123number: Int? = nil) {
         self.name = name
         self.snakeCase = snakeCase
         self.property = property
@@ -42,7 +42,10 @@ public final class Name: Codable, Hashable {
     public func encode(to encoder: Encoder) throws {
         var container = encoder.container(keyedBy: CodingKeys.self)
         try container.encode(name, forKey: .name)
-        try container.encodeIfPresent(snakeCase, forKey: .snakeCase)
+        switch snakeCase {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(snakeCase, forKey: .snakeCase)
+        }
         try container.encodeIfPresent(property, forKey: .property)
         try container.encodeIfPresent(_123number, forKey: ._123number)
     }
@@ -57,7 +60,7 @@ public final class Name: Codable, Hashable {
 
     public func hash(into hasher: inout Hasher) {
         hasher.combine(name.hashValue)
-        hasher.combine(snakeCase?.hashValue)
+        hasher.combine(snakeCase.hashValue)
         hasher.combine(property?.hashValue)
         hasher.combine(_123number?.hashValue)
         

samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Pet.swift

@@ -28,9 +28,9 @@ public final class Pet: Codable, Hashable {
     public var photoUrls: [String]
     public var tags: [Tag]?
     /** pet status in the store */
-    public var status: Status?
+    public var status: NullEncodable<Status>
 
-    public init(id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: Status? = nil) {
+    public init(id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: NullEncodable<Status> = .encodeNull) {
         self.id = id
         self.category = category
         self.name = name
@@ -57,7 +57,10 @@ public final class Pet: Codable, Hashable {
         try container.encode(name, forKey: .name)
         try container.encode(photoUrls, forKey: .photoUrls)
         try container.encodeIfPresent(tags, forKey: .tags)
-        try container.encodeIfPresent(status, forKey: .status)
+        switch status {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(status, forKey: .status)
+        }
     }
 
     public static func == (lhs: Pet, rhs: Pet) -> Bool {
@@ -76,7 +79,7 @@ public final class Pet: Codable, Hashable {
         hasher.combine(name.hashValue)
         hasher.combine(photoUrls.hashValue)
         hasher.combine(tags?.hashValue)
-        hasher.combine(status?.hashValue)
+        hasher.combine(status.hashValue)
         
     }
 }

samples/client/petstore/swift5/urlsessionLibrary/SwaggerClientTests/SwaggerClientTests/PetAPITests.swift

@@ -28,7 +28,7 @@ class PetAPITests: XCTestCase {
         let expectation = self.expectation(description: "testCreatePet")
         let category = PetstoreClientAPI.Category(id: 1234, name: "eyeColor")
         let tags = [PetstoreClientAPI.Tag(id: 1234, name: "New York"), PetstoreClientAPI.Tag(id: 124321, name: "Jose")]
-        let newPet = PetstoreClientAPI.Pet(id: 1000, category: category, name: "Fluffy", photoUrls: ["https://petstore.com/sample/photo1.jpg", "https://petstore.com/sample/photo2.jpg"], tags: tags, status: .available)
+        let newPet = PetstoreClientAPI.Pet(id: 1000, category: category, name: "Fluffy", photoUrls: ["https://petstore.com/sample/photo1.jpg", "https://petstore.com/sample/photo2.jpg"], tags: tags, status: .encodeValue(.available))
 
         PetstoreClientAPI.PetAPI.addPet(body: newPet) { (_, error) in
             guard error == nil else {

samples/client/petstore/swift5/urlsessionLibrary/docs/Name.md

@@ -4,7 +4,7 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **name** | **Int** |  | 
-**snakeCase** | **Int** |  | [optional] [readonly] 
+**snakeCase** | **Int** |  | [optional] [readonly] [default to .encodeValue(11033)]
 **property** | **String** |  | [optional] 
 **_123number** | **Int** |  | [optional] [readonly] 
 

samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models.swift

@@ -36,6 +36,36 @@ extension CaseIterableDefaultsLast {
     }
 }
 
+/// A flexible type that can be encoded (`.encodeNull` or `.encodeValue`)
+/// or not encoded (`.encodeNothing`). Intended for request payloads.
+public enum NullEncodable<Wrapped: Hashable>: Hashable {
+    case encodeNothing
+    case encodeNull
+    case encodeValue(Wrapped)
+}
+
+extension NullEncodable: Codable where Wrapped: Codable {
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        if let value = try? container.decode(Wrapped.self) {
+            self = .encodeValue(value)
+        } else if container.decodeNil() {
+            self = .encodeNull
+        } else {
+            self = .encodeNothing
+        }
+    }
+
+    public func encode(to encoder: Encoder) throws {
+        var container = encoder.singleValueContainer()
+        switch self {
+        case .encodeNothing: return
+        case .encodeNull: try container.encodeNil()
+        case .encodeValue(let wrapped): try container.encode(wrapped)
+        }
+    }
+}
+
 public enum ErrorResponse: Error {
     case error(Int, Data?, URLResponse?, Error)
 }

samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Name.swift

@@ -14,11 +14,11 @@ import AnyCodable
 public struct Name: Codable {
 
     public var name: Int
-    public var snakeCase: Int?
+    public var snakeCase: NullEncodable<Int> = .encodeValue(11033)
     public var property: String?
     public var _123number: Int?
 
-    public init(name: Int, snakeCase: Int? = nil, property: String? = nil, _123number: Int? = nil) {
+    public init(name: Int, snakeCase: NullEncodable<Int> = .encodeValue(11033), property: String? = nil, _123number: Int? = nil) {
         self.name = name
         self.snakeCase = snakeCase
         self.property = property
@@ -37,7 +37,10 @@ public struct Name: Codable {
     public func encode(to encoder: Encoder) throws {
         var container = encoder.container(keyedBy: CodingKeys.self)
         try container.encode(name, forKey: .name)
-        try container.encodeIfPresent(snakeCase, forKey: .snakeCase)
+        switch snakeCase {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(snakeCase, forKey: .snakeCase)
+        }
         try container.encodeIfPresent(property, forKey: .property)
         try container.encodeIfPresent(_123number, forKey: ._123number)
     }

samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift

@@ -23,9 +23,9 @@ public struct Pet: Codable, Hashable {
     public var photoUrls: [String]
     public var tags: [Tag]?
     /** pet status in the store */
-    public var status: Status?
+    public var status: NullEncodable<Status>
 
-    public init(id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: Status? = nil) {
+    public init(id: Int64? = nil, category: Category? = nil, name: String, photoUrls: [String], tags: [Tag]? = nil, status: NullEncodable<Status> = .encodeNull) {
         self.id = id
         self.category = category
         self.name = name
@@ -52,7 +52,10 @@ public struct Pet: Codable, Hashable {
         try container.encode(name, forKey: .name)
         try container.encode(photoUrls, forKey: .photoUrls)
         try container.encodeIfPresent(tags, forKey: .tags)
-        try container.encodeIfPresent(status, forKey: .status)
+        switch status {
+        case .encodeNothing: break
+        case .encodeNull, .encodeValue: try container.encode(status, forKey: .status)
+        }
     }
 }
 

samples/client/petstore/swift5/x-swift-hashable/docs/Name.md

@@ -4,7 +4,7 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **name** | **Int** |  | 
-**snakeCase** | **Int** |  | [optional] [readonly] 
+**snakeCase** | **Int** |  | [optional] [readonly] [default to .encodeValue(11033)]
 **property** | **String** |  | [optional] 
 **_123number** | **Int** |  | [optional] [readonly]