title: @AO\JsonContent in parameter of get request
body: <p>In swagger's documentation using OpenApi specification, you can wrap schema in parameter to content with application/json:</p>
  
  <pre><code>parameters:
    - in: query
      name: filter
  
      # Wrap 'schema' into 'content.&lt;media-type&gt;'
      content:
        application/json:  # &lt;---- media type indicates how to serialize / deserialize the parameter content
          schema:
            type: object
            properties:
              type:
                type: string
              color:
                type: string 
  </code></pre>
  
  <p>to send objects like this <code>filter={"type":"t-shirt","color":"blue"}</code>.
  How to do it in swagger-php? </p>