code: def remove_from_master_node(self, wait_for_finish=False, timeout=20, **kw):
          
          return Task.execute(self, 'remove_from_master_node',
              timeout=timeout, wait_for_finish=wait_for_finish, **kw)
docs: Remove this VSS Context from it's parent VSS Container.
          This is required before calling VSSContext.delete(). It preps
          the engine for removal.
          
          :param bool wait_for_finish: wait for the task to finish
          :param int timeout: how long to wait if delay
          :type: TaskOperationPoller