def add_event_listener(self, listener):
        if not listener in self.event_listeners:
            self.event_listeners.append(listener)
Registers a connection adapter to a prefix.
dataset/ETHPy150Open kivy/kivy/kivy/base.py/EventLoopBase.add_event_listener--crossover with--dataset/ETHPy150Open BergWerkGIS/QGIS-CKAN-Browser/CKAN-Browser/request/sessions.py/Session.mount