title: Prevent submission of Created Entry after a submitChanges
body: <p>I have a odata model v2. When I create a new entry by using <a href="https://sapui5.hana.ondemand.com/#/api/sap.ui.model.odata.v2.ODataModel/methods/createEntry" rel="nofollow noreferrer">createEntry</a> function it does not submit the newly created entry to the backend. When I use <a href="https://sapui5.hana.ondemand.com/#/api/sap.ui.model.odata.v2.ODataModel/methods/submitChanges" rel="nofollow noreferrer">submitChanges</a> function with a <code>groupId</code> I expected the only thing that is submitted be the list of requests with that group id.</p>
  
  <pre><code>oDataModel.submitChanges({
      groupId: sGroupId,
      success: function(oData){
          console.log("Done", oData);
      },
      error:  function(oError ){
          console.log("Failed", oError);
      }
  });
  </code></pre>
  
  <p>Uptil now everything going well, until I will try to create the next entry by using <code>createEntry</code>. Please note it is after a successful <code>submitChange</code>. Then this newly created entry is submitted to the backend automatically. Now the question is how I can prevent odata model from auto submission of created entries. "I use <code>sGroupId</code> and I expect only this submission done only one time." </p>