@abc.abstractmethod
    def handle_open_stream(self, attr):
Get the editor that is currently editing an object.
dataset/ETHPy150Open HenryHu/pybbs/xmpp/interfaces.py/CoreInterface.handle_open_stream--crossover with--dataset/ETHPy150Open enthought/pyface/pyface/workbench/i_editor_manager.py/IEditorManager.get_editor