def get_current_controller(self):
        raise NotImplementedError("Subclass must implement "
                                  "get_current_controller")
Calls server side update handler.
dataset/ETHPy150Open VisTrails/VisTrails/vistrails/core/application.py/VistrailsApplicationInterface.get_current_controller--crossover with--dataset/ETHPy150Open djc/couchdb-python/couchdb/client.py/Database.update_doc