[rust] Fix model constructor for required enum array (#14196)

For a required enum array property the generated model constructor used
the type `RequiredEnums` instead of `Vec<RequiredEnums>`.

samples/client/petstore/rust/reqwest/petstore-async-middleware/.openapi-generator/FILES

@@ -6,6 +6,7 @@ docs/ActionContainer.md
 docs/ApiResponse.md
 docs/Baz.md
 docs/Category.md
+docs/EnumArrayTesting.md
 docs/FakeApi.md
 docs/OptionalTesting.md
 docs/Order.md
@@ -32,6 +33,7 @@ src/models/action_container.rs
 src/models/api_response.rs
 src/models/baz.rs
 src/models/category.rs
+src/models/enum_array_testing.rs
 src/models/mod.rs
 src/models/model_return.rs
 src/models/optional_testing.rs

samples/client/petstore/rust/reqwest/petstore-async-middleware/README.md

@@ -56,6 +56,7 @@ Class | Method | HTTP request | Description
  - [ApiResponse](docs/ApiResponse.md)
  - [Baz](docs/Baz.md)
  - [Category](docs/Category.md)
+ - [EnumArrayTesting](docs/EnumArrayTesting.md)
  - [OptionalTesting](docs/OptionalTesting.md)
  - [Order](docs/Order.md)
  - [Pet](docs/Pet.md)

samples/client/petstore/rust/reqwest/petstore-async-middleware/docs/EnumArrayTesting.md

@@ -0,0 +1,11 @@
+# EnumArrayTesting
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**required_enums** | **Vec<String>** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

samples/client/petstore/rust/reqwest/petstore-async-middleware/src/models/enum_array_testing.rs

@@ -0,0 +1,46 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ * Generated by: https://openapi-generator.tech
+ */
+
+/// EnumArrayTesting : Test of enum array
+
+
+
+#[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
+pub struct EnumArrayTesting {
+    #[serde(rename = "required_enums")]
+    pub required_enums: Vec<RequiredEnums>,
+}
+
+impl EnumArrayTesting {
+    /// Test of enum array
+    pub fn new(required_enums: Vec<RequiredEnums>) -> EnumArrayTesting {
+        EnumArrayTesting {
+            required_enums,
+        }
+    }
+}
+
+/// 
+#[derive(Clone, Copy, Debug, Eq, PartialEq, Ord, PartialOrd, Hash, Serialize, Deserialize)]
+pub enum RequiredEnums {
+    #[serde(rename = "A")]
+    A,
+    #[serde(rename = "B")]
+    B,
+    #[serde(rename = "C")]
+    C,
+}
+
+impl Default for RequiredEnums {
+    fn default() -> RequiredEnums {
+        Self::A
+    }
+}
+

samples/client/petstore/rust/reqwest/petstore-async-middleware/src/models/mod.rs

@@ -6,6 +6,8 @@ pub mod baz;
 pub use self::baz::Baz;
 pub mod category;
 pub use self::category::Category;
+pub mod enum_array_testing;
+pub use self::enum_array_testing::EnumArrayTesting;
 pub mod optional_testing;
 pub use self::optional_testing::OptionalTesting;
 pub mod order;