title: Is it possible to write server base URL with varying length variable in OpenAPI?
body: <p>Is it possible in OpenAPI to write a server base URL which can match all below examples?</p>
  <ol>
  <li>https://localhost/abc/def/path</li>
  <li>https://localhost/path</li>
  <li>https://localhost/abc/path</li>
  </ol>
  <p>I want to use <code>/path</code> in my path object but I'm not sure how to write varying length variable in server base URL.</p>
  <p>Thanks.</p>