title: Is there any way to search in the properties of google drive files?
body: <p>I want to search files like this but I am getting exception.</p>
  
  <pre><code>query = "mimeType ='application/pdf' and properties has { key="+ "'" + agency + "'" +"and value contains"+ "'" + someValue + "'" + " and visibility='PUBLIC'} ";
  request = service.files().list().setQ(query);
  </code></pre>
  
  <p>Do we need to search by exact value?</p>
  
  <pre><code>query = "mimeType ='application/pdf' and properties has { key="+ "'" + agency + "'" +"and value = "+ "'" + someValue + "'" + " and visibility='PUBLIC'} ";
  request = service.files().list().setQ(query);
  </code></pre>
  
  <p>The second one is working, but is there any feature to support wildcard characters? </p>