title: find() in Parse.Cloud.beforeSave not working
body: <p>I am having a problem while trying to write a beforeSave cloud function.
  This is the code:</p>
  
  <pre><code>Parse.Cloud.beforeSave
  ('MyCollection', function(request, response)
   {
    console.log("Hello from beforeSave-0");
  
   var unitListQuery;
   unitListQuery = new Parse.Query("MyCollection");
   //unitListQuery.equalTo("orderKey",request.object.get("orderKey").toString());
   unitListQuery.equalTo("orderKey",request.object.orderKey);
  
   console.log("Hello from beforeSave-1");
   console.log("ROG:"+request.object.get("orderKey"));
   unitListQuery.find().then
   (function(resUnit) {// Mark-One.
    console.log("Hello from beforeSave");
    console.log(resUnit);
    if (resUnit.length) {
      //response.error("RECORD-EXISTS");
      response.success();
      console.log("false-success-RECORD-EXISTS");
    } else {
      response.success();
      console.log("success-success");
    }// Mark-Two.
  }, function(error) {
    console.error("Did not find the thing (" + request.object.get("orderKey") + ").");
    console.log("error : " + error);
    //response.error(error);
    response.success();
    console.log("false-success");
    });
   });
  </code></pre>
  
  <p>My current issue is that the execution never gets into the part of the code where something is found.
  That is between the lines marked: <em>Mark-One</em> and <em>Mark-Two</em>, even when I can check by hand that the record exists in MyCollection.</p>
  
  <p><strong>What am I missing here? I hope someone can point me to something wrong.</strong></p>
  
  <p>For information, here is the record found in the _SCHEMA collection for MyCollection.</p>
  
  <pre><code>{
      "_id": "MyCollection",
      "objectId": "string",
      "updatedAt": "date",
      "createdAt": "date",
      "orderKey": "string",
      .....
      "_metadata": {
          "class_permissions": {
              "find": {
                  "*": true
              }
          },
          "indexes": {
              "_id_": {
                  "_id": 1
              }
          }
      }
  }
  </code></pre>