[RUST] chore: Clean up Rust reqwest and model templates (#20674)

* Cleaned up rust-reqwest-trait api template

* Cleaned up rust-reqwest api template

* Cleaned up rust model template

modules/openapi-generator/src/main/resources/rust/model.mustache

@@ -132,7 +132,21 @@ pub struct {{{classname}}} {
     {{#required}}#[serde_as(as = "serde_with::base64::Base64")]{{/required}}{{^required}}#[serde_as(as = "Option<serde_with::base64::Base64>")]{{/required}}
     {{/isByteArray}}
     #[serde(rename = "{{{baseName}}}"{{^required}}{{#isNullable}}, default, with = "::serde_with::rust::double_option"{{/isNullable}}{{/required}}{{^required}}, skip_serializing_if = "Option::is_none"{{/required}}{{#required}}{{#isNullable}}, deserialize_with = "Option::deserialize"{{/isNullable}}{{/required}})]
-    pub {{{name}}}: {{#isNullable}}Option<{{/isNullable}}{{^required}}Option<{{/required}}{{#isEnum}}{{#isArray}}{{#uniqueItems}}std::collections::HashSet<{{/uniqueItems}}{{^uniqueItems}}Vec<{{/uniqueItems}}{{/isArray}}{{{enumName}}}{{#isArray}}>{{/isArray}}{{/isEnum}}{{^isEnum}}{{#isModel}}{{^avoidBoxedModels}}Box<{{/avoidBoxedModels}}{{{dataType}}}{{^avoidBoxedModels}}>{{/avoidBoxedModels}}{{/isModel}}{{^isModel}}{{#isByteArray}}Vec<u8>{{/isByteArray}}{{^isByteArray}}{{{dataType}}}{{/isByteArray}}{{/isModel}}{{/isEnum}}{{#isNullable}}>{{/isNullable}}{{^required}}>{{/required}},
+    pub {{{name}}}: {{!
+    ### Option Start
+    }}{{#isNullable}}Option<{{/isNullable}}{{^required}}Option<{{/required}}{{!
+    ### Enums
+    }}{{#isEnum}}{{#isArray}}{{#uniqueItems}}std::collections::HashSet<{{/uniqueItems}}{{^uniqueItems}}Vec<{{/uniqueItems}}{{/isArray}}{{{enumName}}}{{#isArray}}>{{/isArray}}{{/isEnum}}{{!
+    ### Non-Enums Start
+    }}{{^isEnum}}{{!
+    ### Models
+    }}{{#isModel}}{{^avoidBoxedModels}}Box<{{/avoidBoxedModels}}{{{dataType}}}{{^avoidBoxedModels}}>{{/avoidBoxedModels}}{{/isModel}}{{!
+    ### Primative datatypes
+    }}{{^isModel}}{{#isByteArray}}Vec<u8>{{/isByteArray}}{{^isByteArray}}{{{dataType}}}{{/isByteArray}}{{/isModel}}{{!
+    ### Non-Enums End
+    }}{{/isEnum}}{{!
+    ### Option End (and trailing comma)
+    }}{{#isNullable}}>{{/isNullable}}{{^required}}>{{/required}},
 {{/vars}}
 }
 
@@ -140,7 +154,17 @@ impl {{{classname}}} {
     {{#description}}
     /// {{{.}}}
     {{/description}}
-    pub fn new({{#requiredVars}}{{{name}}}: {{#isNullable}}Option<{{/isNullable}}{{#isEnum}}{{#isArray}}{{#uniqueItems}}std::collections::HashSet<{{/uniqueItems}}{{^uniqueItems}}Vec<{{/uniqueItems}}{{/isArray}}{{{enumName}}}{{#isArray}}>{{/isArray}}{{/isEnum}}{{^isEnum}}{{#isByteArray}}Vec<u8>{{/isByteArray}}{{^isByteArray}}{{{dataType}}}{{/isByteArray}}{{/isEnum}}{{#isNullable}}>{{/isNullable}}{{^-last}}, {{/-last}}{{/requiredVars}}) -> {{{classname}}} {
+    pub fn new({{#requiredVars}}{{{name}}}: {{!
+    ### Option Start
+    }}{{#isNullable}}Option<{{/isNullable}}{{!
+    ### Enums
+    }}{{#isEnum}}{{#isArray}}{{#uniqueItems}}std::collections::HashSet<{{/uniqueItems}}{{^uniqueItems}}Vec<{{/uniqueItems}}{{/isArray}}{{{enumName}}}{{#isArray}}>{{/isArray}}{{/isEnum}}{{!
+    ### Non-Enums
+    }}{{^isEnum}}{{#isByteArray}}Vec<u8>{{/isByteArray}}{{^isByteArray}}{{{dataType}}}{{/isByteArray}}{{/isEnum}}{{!
+    ### Option End
+    }}{{#isNullable}}>{{/isNullable}}{{!
+    ### Comma for next arguement
+    }}{{^-last}}, {{/-last}}{{/requiredVars}}) -> {{{classname}}} {
         {{{classname}}} {
             {{#vars}}
             {{{name}}}{{^required}}: None{{/required}}{{#required}}{{#isModel}}{{^avoidBoxedModels}}: {{^isNullable}}Box::new({{{name}}}){{/isNullable}}{{#isNullable}}if let Some(x) = {{{name}}} {Some(Box::new(x))} else {None}{{/isNullable}}{{/avoidBoxedModels}}{{/isModel}}{{/required}},

modules/openapi-generator/src/main/resources/rust/reqwest-trait/api.mustache

@@ -26,10 +26,42 @@ pub trait {{{classname}}}: Send + Sync {
     /// {{{notes}}}
     {{/notes.empty}}
 {{#vendorExtensions.x-group-parameters}}
-    async fn {{{operationId}}}(&self, {{#allParams}}{{#-first}} params: {{{operationIdCamelCase}}}Params {{/-first}}{{/allParams}}) -> Result<{{#supportMultipleResponses}}ResponseContent<{{{operationIdCamelCase}}}Success>{{/supportMultipleResponses}}{{^supportMultipleResponses}}{{^returnType}}(){{/returnType}}{{{returnType}}}{{/supportMultipleResponses}}, Error<{{{operationIdCamelCase}}}Error>>;
+    async fn {{{operationId}}}(&self, {{#allParams}}{{#-first}} params: {{{operationIdCamelCase}}}Params {{/-first}}{{/allParams}}{{! 
+    ### Function return type
+    }}) -> Result<{{!
+    ### Multi response support
+    }}{{#supportMultipleResponses}}ResponseContent<{{{operationIdCamelCase}}}Success>{{/supportMultipleResponses}}{{! 
+    ### Regular return type
+    }}{{^supportMultipleResponses}}{{^returnType}}(){{/returnType}}{{{returnType}}}{{/supportMultipleResponses}}{{!
+    ### Error Type
+    }}, Error<{{{operationIdCamelCase}}}Error>>;
 {{/vendorExtensions.x-group-parameters}}
 {{^vendorExtensions.x-group-parameters}}
-    async fn {{{operationId}}}<{{#allParams}}'{{#lambda.lifetimeName}}{{{paramName}}}{{/lambda.lifetimeName}}{{^-last}}, {{/-last}}{{/allParams}}>(&self, {{#allParams}}{{{paramName}}}: {{^required}}Option<{{/required}}{{#required}}{{#isNullable}}Option<{{/isNullable}}{{/required}}{{#isString}}{{#isArray}}Vec<{{/isArray}}{{^isUuid}}&'{{#lambda.lifetimeName}}{{{paramName}}}{{/lambda.lifetimeName}} str{{/isUuid}}{{#isArray}}>{{/isArray}}{{/isString}}{{#isUuid}}{{#isArray}}Vec<{{/isArray}}&str{{#isArray}}>{{/isArray}}{{/isUuid}}{{^isString}}{{^isUuid}}{{^isPrimitiveType}}{{^isContainer}}models::{{/isContainer}}{{/isPrimitiveType}}{{{dataType}}}{{/isUuid}}{{/isString}}{{^required}}>{{/required}}{{#required}}{{#isNullable}}>{{/isNullable}}{{/required}}{{^-last}}, {{/-last}}{{/allParams}}) -> Result<{{#supportMultipleResponses}}ResponseContent<{{{operationIdCamelCase}}}Success>{{/supportMultipleResponses}}{{^supportMultipleResponses}}{{^returnType}}(){{/returnType}}{{{returnType}}}{{/supportMultipleResponses}}, Error<{{{operationIdCamelCase}}}Error>>;
+    async fn {{{operationId}}}{{!
+    ### Lifetimes
+    }}<{{#allParams}}'{{#lambda.lifetimeName}}{{{paramName}}}{{/lambda.lifetimeName}}{{^-last}}, {{/-last}}{{/allParams}}>{{! 
+    ### Function parameter names
+    }}(&self, {{#allParams}}{{{paramName}}}: {{! 
+    ### Option Start
+    }}{{^required}}Option<{{/required}}{{#required}}{{#isNullable}}Option<{{/isNullable}}{{/required}}{{! 
+    ### &str and Vec<&str>
+    }}{{#isString}}{{#isArray}}Vec<{{/isArray}}{{^isUuid}}&'{{#lambda.lifetimeName}}{{{paramName}}}{{/lambda.lifetimeName}} str{{/isUuid}}{{#isArray}}>{{/isArray}}{{/isString}}{{! 
+    ### UUIDs
+    }}{{#isUuid}}{{#isArray}}Vec<{{/isArray}}&str{{#isArray}}>{{/isArray}}{{/isUuid}}{{! 
+    ### Models and primative types
+    }}{{^isString}}{{^isUuid}}{{^isPrimitiveType}}{{^isContainer}}models::{{/isContainer}}{{/isPrimitiveType}}{{{dataType}}}{{/isUuid}}{{/isString}}{{! 
+    ### Option End
+    }}{{^required}}>{{/required}}{{#required}}{{#isNullable}}>{{/isNullable}}{{/required}}{{! 
+    ### Comma for next arguement
+    }}{{^-last}}, {{/-last}}{{/allParams}}{{!
+    ### Function return type
+    }}) -> Result<{{! 
+    ### Multi response support
+    }}{{#supportMultipleResponses}}ResponseContent<{{{operationIdCamelCase}}}Success>{{/supportMultipleResponses}}{{! 
+    ### Regular return type
+    }}{{^supportMultipleResponses}}{{^returnType}}(){{/returnType}}{{{returnType}}}{{/supportMultipleResponses}}{{! 
+    ### Error Type
+    }}, Error<{{{operationIdCamelCase}}}Error>>;
 {{/vendorExtensions.x-group-parameters}}
 {{/operation}}
 {{/operations}}
@@ -61,7 +93,19 @@ pub struct {{{operationIdCamelCase}}}Params {
     {{#description}}
     /// {{{.}}}
     {{/description}}
-    pub {{{paramName}}}: {{^required}}Option<{{/required}}{{#required}}{{#isNullable}}Option<{{/isNullable}}{{/required}}{{^isUuid}}{{#isString}}{{#isArray}}Vec<{{/isArray}}String{{#isArray}}>{{/isArray}}{{/isString}}{{/isUuid}}{{#isUuid}}{{#isArray}}Vec<{{/isArray}}String{{#isArray}}>{{/isArray}}{{/isUuid}}{{^isString}}{{^isUuid}}{{^isPrimitiveType}}{{^isContainer}}models::{{/isContainer}}{{/isPrimitiveType}}{{{dataType}}}{{/isUuid}}{{/isString}}{{^required}}>{{/required}}{{#required}}{{#isNullable}}>{{/isNullable}}{{/required}}{{^-last}},{{/-last}}
+    pub {{{paramName}}}: {{!
+    ### Option Start
+    }}{{^required}}Option<{{/required}}{{#required}}{{#isNullable}}Option<{{/isNullable}}{{/required}}{{!
+    ### &str and Vec<&str>
+    }}{{^isUuid}}{{#isString}}{{#isArray}}Vec<{{/isArray}}String{{#isArray}}>{{/isArray}}{{/isString}}{{/isUuid}}{{!
+    ### UUIDs
+    }}{{#isUuid}}{{#isArray}}Vec<{{/isArray}}String{{#isArray}}>{{/isArray}}{{/isUuid}}{{!
+    ### Models and primative types
+    }}{{^isString}}{{^isUuid}}{{^isPrimitiveType}}{{^isContainer}}models::{{/isContainer}}{{/isPrimitiveType}}{{{dataType}}}{{/isUuid}}{{/isString}}{{!
+    ### Option End
+    }}{{^required}}>{{/required}}{{#required}}{{#isNullable}}>{{/isNullable}}{{/required}}{{!
+    ### Comma for next field
+    }}{{^-last}},{{/-last}}
 {{#-last}}
 }
 
@@ -82,7 +126,15 @@ impl {{classname}} for {{classname}}Client {
     /// {{{.}}}
     {{/notes}}
     {{#vendorExtensions.x-group-parameters}}
-    async fn {{{operationId}}}(&self, {{#allParams}}{{#-first}} params: {{{operationIdCamelCase}}}Params {{/-first}}{{/allParams}}) -> Result<{{#supportMultipleResponses}}ResponseContent<{{{operationIdCamelCase}}}Success>{{/supportMultipleResponses}}{{^supportMultipleResponses}}{{^returnType}}(){{/returnType}}{{{returnType}}}{{/supportMultipleResponses}}, Error<{{{operationIdCamelCase}}}Error>> {
+    async fn {{{operationId}}}(&self, {{#allParams}}{{#-first}} params: {{{operationIdCamelCase}}}Params {{/-first}}{{/allParams}}{{!
+    ### Function return type
+    }}) -> Result<{{!
+    ### Multi response support
+    }}{{#supportMultipleResponses}}ResponseContent<{{{operationIdCamelCase}}}Success>{{/supportMultipleResponses}}{{!
+    ### Regular return type
+    }}{{^supportMultipleResponses}}{{^returnType}}(){{/returnType}}{{{returnType}}}{{/supportMultipleResponses}}{{!
+    ### Error Type
+    }}, Error<{{{operationIdCamelCase}}}Error>> {
         {{#allParams}}{{#-first}}
         let {{{operationIdCamelCase}}}Params {
             {{#allParams}}
@@ -93,7 +145,31 @@ impl {{classname}} for {{classname}}Client {
 
     {{/vendorExtensions.x-group-parameters}}
     {{^vendorExtensions.x-group-parameters}}
-    async fn {{{operationId}}}<{{#allParams}}'{{#lambda.lifetimeName}}{{{paramName}}}{{/lambda.lifetimeName}}{{^-last}}, {{/-last}}{{/allParams}}>(&self, {{#allParams}}{{{paramName}}}: {{^required}}Option<{{/required}}{{#required}}{{#isNullable}}Option<{{/isNullable}}{{/required}}{{#isString}}{{#isArray}}Vec<{{/isArray}}{{^isUuid}}&'{{#lambda.lifetimeName}}{{{paramName}}}{{/lambda.lifetimeName}} str{{/isUuid}}{{#isArray}}>{{/isArray}}{{/isString}}{{#isUuid}}{{#isArray}}Vec<{{/isArray}}&str{{#isArray}}>{{/isArray}}{{/isUuid}}{{^isString}}{{^isUuid}}{{^isPrimitiveType}}{{^isContainer}}models::{{/isContainer}}{{/isPrimitiveType}}{{{dataType}}}{{/isUuid}}{{/isString}}{{^required}}>{{/required}}{{#required}}{{#isNullable}}>{{/isNullable}}{{/required}}{{^-last}}, {{/-last}}{{/allParams}}) -> Result<{{#supportMultipleResponses}}ResponseContent<{{{operationIdCamelCase}}}Success>{{/supportMultipleResponses}}{{^supportMultipleResponses}}{{^returnType}}(){{/returnType}}{{{returnType}}}{{/supportMultipleResponses}}, Error<{{{operationIdCamelCase}}}Error>> {
+    async fn {{{operationId}}}{{!
+    ### Lifetimes
+    }}<{{#allParams}}'{{#lambda.lifetimeName}}{{{paramName}}}{{/lambda.lifetimeName}}{{^-last}}, {{/-last}}{{/allParams}}>{{!
+    ### Function parameter names
+    }}(&self, {{#allParams}}{{{paramName}}}: {{! 
+    ### Option Start
+    }}{{^required}}Option<{{/required}}{{#required}}{{#isNullable}}Option<{{/isNullable}}{{/required}}{{!
+    ### &str and Vec<&str>
+    }}{{#isString}}{{#isArray}}Vec<{{/isArray}}{{^isUuid}}&'{{#lambda.lifetimeName}}{{{paramName}}}{{/lambda.lifetimeName}} str{{/isUuid}}{{#isArray}}>{{/isArray}}{{/isString}}{{!
+    ### UUIDs
+    }}{{#isUuid}}{{#isArray}}Vec<{{/isArray}}&str{{#isArray}}>{{/isArray}}{{/isUuid}}{{!
+    ### Models and primative types
+    }}{{^isString}}{{^isUuid}}{{^isPrimitiveType}}{{^isContainer}}models::{{/isContainer}}{{/isPrimitiveType}}{{{dataType}}}{{/isUuid}}{{/isString}}{{!
+    ### Option End
+    }}{{^required}}>{{/required}}{{#required}}{{#isNullable}}>{{/isNullable}}{{/required}}{{!
+    ### Comma for next arguement
+    }}{{^-last}}, {{/-last}}{{/allParams}}{{! 
+    ### Function return type
+    }}) -> Result<{{! 
+    ### Multi response support
+    }}{{#supportMultipleResponses}}ResponseContent<{{{operationIdCamelCase}}}Success>{{/supportMultipleResponses}}{{!
+    ### Regular return type
+    }}{{^supportMultipleResponses}}{{^returnType}}(){{/returnType}}{{{returnType}}}{{/supportMultipleResponses}}{{!
+    ### Regular return type
+    }}, Error<{{{operationIdCamelCase}}}Error>> {
     {{/vendorExtensions.x-group-parameters}}
         let local_var_configuration = &self.configuration;
 

modules/openapi-generator/src/main/resources/rust/reqwest/api.mustache

@@ -17,7 +17,19 @@ pub struct {{{operationIdCamelCase}}}Params {
     {{#description}}
     /// {{{.}}}
     {{/description}}
-    pub {{{paramName}}}: {{^required}}Option<{{/required}}{{#required}}{{#isNullable}}Option<{{/isNullable}}{{/required}}{{^isUuid}}{{#isString}}{{#isArray}}Vec<{{/isArray}}String{{#isArray}}>{{/isArray}}{{/isString}}{{/isUuid}}{{#isUuid}}{{#isArray}}Vec<{{/isArray}}String{{#isArray}}>{{/isArray}}{{/isUuid}}{{^isString}}{{^isUuid}}{{^isPrimitiveType}}{{^isContainer}}models::{{/isContainer}}{{/isPrimitiveType}}{{{dataType}}}{{/isUuid}}{{/isString}}{{^required}}>{{/required}}{{#required}}{{#isNullable}}>{{/isNullable}}{{/required}}{{^-last}},{{/-last}}
+    pub {{{paramName}}}: {{!
+    ### Option Start
+    }}{{^required}}Option<{{/required}}{{#required}}{{#isNullable}}Option<{{/isNullable}}{{/required}}{{!
+    ### &str and Vec<&str>
+    }}{{^isUuid}}{{#isString}}{{#isArray}}Vec<{{/isArray}}String{{#isArray}}>{{/isArray}}{{/isString}}{{/isUuid}}{{!
+    ### UUIDs
+    }}{{#isUuid}}{{#isArray}}Vec<{{/isArray}}String{{#isArray}}>{{/isArray}}{{/isUuid}}{{!
+    ### Models and primative types
+    }}{{^isString}}{{^isUuid}}{{^isPrimitiveType}}{{^isContainer}}models::{{/isContainer}}{{/isPrimitiveType}}{{{dataType}}}{{/isUuid}}{{/isString}}{{!
+    ### Option End
+    }}{{^required}}>{{/required}}{{#required}}{{#isNullable}}>{{/isNullable}}{{/required}}{{!
+    ### Comma for next arguement
+    }}{{^-last}},{{/-last}}
 {{#-last}}
 }
 
@@ -80,10 +92,48 @@ pub enum {{{operationIdCamelCase}}}Error {
 /// {{{.}}}
 {{/notes}}
 {{#vendorExtensions.x-group-parameters}}
-pub {{#supportAsync}}async {{/supportAsync}}fn {{{operationId}}}(configuration: &configuration::Configuration{{#allParams}}{{#-first}}, params: {{{operationIdCamelCase}}}Params{{/-first}}{{/allParams}}) -> Result<{{#isResponseFile}}{{#supportAsync}}reqwest::Response{{/supportAsync}}{{^supportAsync}}reqwest::blocking::Response{{/supportAsync}}{{/isResponseFile}}{{^isResponseFile}}{{#supportMultipleResponses}}ResponseContent<{{{operationIdCamelCase}}}Success>{{/supportMultipleResponses}}{{^supportMultipleResponses}}{{^returnType}}(){{/returnType}}{{{returnType}}}{{/supportMultipleResponses}}{{/isResponseFile}}, Error<{{{operationIdCamelCase}}}Error>> {
+pub {{#supportAsync}}async {{/supportAsync}}fn {{{operationId}}}(configuration: &configuration::Configuration{{#allParams}}{{#-first}}, {{!
+### Params
+}}params: {{{operationIdCamelCase}}}Params{{/-first}}{{/allParams}}{{!
+### Function return type
+}}) -> Result<{{!
+### Response File Support
+}}{{#isResponseFile}}{{#supportAsync}}reqwest::Response{{/supportAsync}}{{^supportAsync}}reqwest::blocking::Response{{/supportAsync}}{{/isResponseFile}}{{!
+### Regular Responses
+}}{{^isResponseFile}}{{!
+### Multi response support
+}}{{#supportMultipleResponses}}ResponseContent<{{{operationIdCamelCase}}}Success>{{/supportMultipleResponses}}{{!
+### Regular return type
+}}{{^supportMultipleResponses}}{{^returnType}}(){{/returnType}}{{{returnType}}}{{/supportMultipleResponses}}{{/isResponseFile}}{{!
+### Error Type
+}}, Error<{{{operationIdCamelCase}}}Error>> {
 {{/vendorExtensions.x-group-parameters}}
 {{^vendorExtensions.x-group-parameters}}
-pub {{#supportAsync}}async {{/supportAsync}}fn {{{operationId}}}(configuration: &configuration::Configuration, {{#allParams}}{{{paramName}}}: {{^required}}Option<{{/required}}{{#required}}{{#isNullable}}Option<{{/isNullable}}{{/required}}{{#isString}}{{#isArray}}Vec<{{/isArray}}{{^isUuid}}&str{{/isUuid}}{{#isArray}}>{{/isArray}}{{/isString}}{{#isUuid}}{{#isArray}}Vec<{{/isArray}}&str{{#isArray}}>{{/isArray}}{{/isUuid}}{{^isString}}{{^isUuid}}{{^isPrimitiveType}}{{^isContainer}}models::{{/isContainer}}{{/isPrimitiveType}}{{{dataType}}}{{/isUuid}}{{/isString}}{{^required}}>{{/required}}{{#required}}{{#isNullable}}>{{/isNullable}}{{/required}}{{^-last}}, {{/-last}}{{/allParams}}) -> Result<{{#isResponseFile}}{{#supportAsync}}reqwest::Response{{/supportAsync}}{{^supportAsync}}reqwest::blocking::Response{{/supportAsync}}{{/isResponseFile}}{{^isResponseFile}}{{#supportMultipleResponses}}ResponseContent<{{{operationIdCamelCase}}}Success>{{/supportMultipleResponses}}{{^supportMultipleResponses}}{{^returnType}}(){{/returnType}}{{{returnType}}}{{/supportMultipleResponses}}{{/isResponseFile}}, Error<{{{operationIdCamelCase}}}Error>> {
+pub {{#supportAsync}}async {{/supportAsync}}fn {{{operationId}}}(configuration: &configuration::Configuration, {{#allParams}}{{{paramName}}}: {{!
+### Option Start
+}}{{^required}}Option<{{/required}}{{#required}}{{#isNullable}}Option<{{/isNullable}}{{/required}}{{!
+### &str and Vec<&str>
+}}{{#isString}}{{#isArray}}Vec<{{/isArray}}{{^isUuid}}&str{{/isUuid}}{{#isArray}}>{{/isArray}}{{/isString}}{{!
+### UUIDs
+}}{{#isUuid}}{{#isArray}}Vec<{{/isArray}}&str{{#isArray}}>{{/isArray}}{{/isUuid}}{{!
+### Models and primative types
+}}{{^isString}}{{^isUuid}}{{^isPrimitiveType}}{{^isContainer}}models::{{/isContainer}}{{/isPrimitiveType}}{{{dataType}}}{{/isUuid}}{{/isString}}{{!
+### Option End
+}}{{^required}}>{{/required}}{{#required}}{{#isNullable}}>{{/isNullable}}{{/required}}{{!
+### Comma for next arguement
+}}{{^-last}}, {{/-last}}{{/allParams}}{{!
+### Function return type
+}}) -> Result<{{!
+### Response File Support
+}}{{#isResponseFile}}{{#supportAsync}}reqwest::Response{{/supportAsync}}{{^supportAsync}}reqwest::blocking::Response{{/supportAsync}}{{/isResponseFile}}{{!
+### Regular Responses
+}}{{^isResponseFile}}{{!
+### Multi response support
+}}{{#supportMultipleResponses}}ResponseContent<{{{operationIdCamelCase}}}Success>{{/supportMultipleResponses}}{{!
+### Regular return type
+}}{{^supportMultipleResponses}}{{^returnType}}(){{/returnType}}{{{returnType}}}{{/supportMultipleResponses}}{{/isResponseFile}}{{!
+### Error Type
+}}, Error<{{{operationIdCamelCase}}}Error>> {
     {{#allParams.0}}
     // add a prefix to parameters to efficiently prevent name collisions
     {{/allParams.0}}