openapi: 3.0.0
info:
  title: Employees and Managers
  version: 1.0.1
paths:
  '/employees/{id}':
    get:
      operationId: getEmployeeById
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
      responses:
        '200': 
          description: A representation of an employee
          content: 
            application/json: 
              schema:
                type: object
                properties:
                  id: 
                    type: string
                  username:
                    type: string
                  managerId:
                    type: string
          links:
            userManager:
              operationId: getEmployeeById
              parameters:
                id: $response.body#managerId