title: OPEN API 3.0 Extend an in query parameter into paths section
body: <p>It's possible to define a parameter into the parameters section, under components section into an OPEN API sheet.
  At the same time it's possible to reference that parameter into a path, under the responses section.</p>
  
  <p>What I want to do, it's E.G. having a parameter "include" of type array override only the section enum of the schema part, from the paths section referencing the   one in the components one.</p>
  
  <p>It seems the allOf directive it's not allowed in that context, is there a way to do that?
  Probably I just need an example.</p>
  
  <p>Example:</p>
  
  <p>In the components.parameters section:</p>
  
  <pre><code>- name: include
    in: query
    description: relationships to include
    type: array
    style: form
    explode: true
    schema: 
       type: array
       items:
          type: string
  </code></pre>
  
  <p>In the paths. .. parameters section:</p>
  
  <pre><code>- name: include
    in: query
    description: relationships to include
    type: array
    style: form
    explode: true
    schema: 
       type: array
       items:
          type: string
          enum: [legs, owner]           
  </code></pre>
  
  <p>I would like to redefine only the enum section and not</p>