[Client-SDK] [Typescript] [Bug] Service class does not include the request "body" as 2nd parameter of "httpClient.post" and "httpClient.patch".

[Client-SDK] [Typescript] [Bug] Service class does not include the request "body" as 2nd parameter of "httpClient.post" and "httpClient.patch".

Description
The httpClient.post and httpClient.patch in typescript expects 3 parameters as follows respectively..

1. the api url
2. the request body
3. options
   However in the client sdk the generated code submits only 1. api url and 2. options. As a result the options is submitted as body to the request.

Following is the code from typescript client sdk.
POST:
public ....Post(body?: model1, observe: any = 'body', reportProgress: boolean = false): Observable {
.......;
......;
return this.httpClient.post(${this.basePath}/api,
{
withCredentials: this.configuration.withCredentials,
headers: headers,
observe: observe,
reportProgress: reportProgress
}
);
}
PATCH:
public .....IdPatch(id: string, ifMatch: string, body?: model1, observe: any = 'body', reportProgress: boolean = false): Observable {
.......;
......;
return this.httpClient.patch(${this.basePath}/api/${encodeURIComponent(String(id))},
{
withCredentials: this.configuration.withCredentials,
headers: headers,
observe: observe,
reportProgress: reportProgress
}
);
}

Swagger-codegen version

as used in https://app.swaggerhub.com

Swagger declaration file content or url

paths:
  /api:
    post:
      tags:
        - tag1
      summary: Create a model1
      description: >-
        Create a model1
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/model1'
      responses:
        '201':
          description: Create model1
          content:
            application/json:
              schema:
                type: object
                properties:
                  _id:
                    type: string
                    format: string
components:
  model1:
      type: object
      properties:
        id:
          type: string
          format: string
          readOnly: true
        property1:
          type: string
          format: string
        property2:
          type: integer
          format: int32
        property3:
          type: string
          enum: [A, B, C, D]

Command line used for generation

web interface of https://app.swaggerhub.com

Steps to reproduce

1. Login to https://app.swaggerhub.com
2. Go to your My Hub and go to your project
3. Click the "Export" > "Client SDK" > "typescript-angular" bropdown at the right top section.
4. Check the Service class in the generated typescript code.


Suggest a fix/enhancement

Enter the "body" as the 2nd parameter to the "httpClient.post" and "httpClient.patch".
POST:
public ....Post(body?: model1, observe: any = 'body', reportProgress: boolean = false): Observable<any> {
        .......;
        ......;
        return this.httpClient.post(`api`, body, { options: .. });
    }
PATCH:
public .....IdPatch(id: string, ifMatch: string, body?: model1, observe: any = 'body', reportProgress: boolean = false): Observable<any> {
        .......;
        ......;        
        return this.httpClient.patch(`api/${encodeURIComponent(String(id))}`, body, { options: .. });
    }

Start by locating the template or generator entry point for the TypeScript service class and inspect the generated POST and PATCH methods described in the issue. Compare their httpClient calls with the documented request signature, then verify generated output for operations with request bodies and confirm the body is handled separately from the options.