/// <summary>
 /// Called when we decide we need to re-parse a buffer but before we start the buffer.
 /// </summary>
 internal void EnqueingEntry()
 {
     lock (this) {
         IPythonProjectEntry pyEntry = _currentProjEntry as IPythonProjectEntry;
         if (pyEntry != null)
         {
             pyEntry.BeginParsingTree();
         }
     }
 }