def call_handlers(self, since_last_heartbeat):
        pass
Checkin a document.
dataset/ETHPy150Open jupyter/jupyter_client/jupyter_client/channels.py/HBChannel.call_handlers--crossover with--dataset/ETHPy150Open mayan-edms/mayan-edms/mayan/apps/checkouts/api_views.py/APICheckedoutDocumentView.delete