openapi: 3.0.0  
info:  
  title: Example OpenAPI  
  version: 0.0.1  
paths:  
  /mypath:  
    get:  
      parameters:  
        - name: myparam  
          in: query  
          schema:  
            format: date-time  
            type: string  
            example: 1997-07-16T19:20:30.45Z  
      responses:  
        '200':  
          description: Success  