[HttpPost, Route("rooms", Name = "createRoom")]
public abstract System.Threading.Tasks.Task<Room> CreateRoom([FromBody] [BindRequired] Room body);

[System.CodeDom.Compiler.GeneratedCode("NSwag", "13.16.1.0 (NJsonSchema v10.7.2.0 (Newtonsoft.Json v13.0.0.0))")]
public abstract class RoomsControllerBase : ControllerBase
{
	/// <returns>single room</returns>
	[HttpPost, Route("rooms", Name = "createRoom")]
	public abstract System.Threading.Tasks.Task<Room> CreateRoom([FromBody] object? body = null);
}

openapi: "3.0.3"

info:
  version: "1.0.0"
  title: Multifile Example
  description: Lorem ipsum
  contact:
    email: [email protected]
servers:
  - url: .

tags:
  - name: rooms

paths:
  /rooms:
    post:
      description: create a room
      operationId: createRoom
      tags:
        - rooms
      requestBody:
        $ref: "#/components/requestBodies/Room"
      responses:
        "201":
          $ref: "#/components/responses/Room"
        "422":
          $ref: "#/components/responses/Error"
        default:
          $ref: "#/components/responses/Error"
components:
  responses:
    Error:
      description: Error occurred
      content:
        application/json:
          schema:
            $ref: "#/components/schemas/Error"
    Room:
      description: single room
      content:
        application/json:
          schema:
            $ref: "#/components/schemas/Room"
  requestBodies:
    Room:
      required: true
      description: room to add
      content:
        application/json:
          schema:
            $ref: "#/components/schemas/Room"
  schemas:
    DefaultObject:
      type: object
      description: Default object
      properties:
        id:
          type: integer
          readOnly: true
          description: id
          example: 1
        createdAt:
          type: string
          format: date-time
          readOnly: true
          description: timestamp
          example: "2020-04-12T23:20:50.52Z"
    Error:
      type: object
      properties:
        code:
          type: integer
          format: int32
        message:
          type: string
    Room:
      allOf:
        - $ref: "#/components/schemas/DefaultObject"
        - type: object
          properties:
            number:
              type: string
              description: The room number
              example: "4711"
              minLength: 0
              maxLength: 20
            name:
              type: string
              description: The name of the room
              example: MyRoom
              minLength: 2
              maxLength: 255
            bookable:
              type: boolean
              description: Wether this room is bookable or not
              example: true
          required:
            - number
            - bookable