Annotation der GET-Route mit den Dekoratoren @Api… des Swagger Plugins.

companions.controller.ts

import { ApiOperation, ApiResponse, ApiUseTags } from '@nestjs/swagger';
// ...

@ApiUseTags('companions')
@Controller('companions')
export class CompanionsController {
  constructor(private service: CompanionsService) {}

  @Get()
  @ApiOperation({ title: 'Get all companions near you.' })
  @ApiResponse({ status: 200, description: 'An array of companions near you.' })
  async getAll(): Promise<Companion[]> {
    return this.service.findAll();
  }
  
  // ...
}