<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def list_receivers(self):
 """ Prints a list of all registered receivers. Including signal, plugin name and description. """

        print("Receiver list")
        print("*************\n")
        for key, receiver in self.app.signals.receivers.items():
            print("%s <-- %s (%s):\n  %s\n" % (receiver.name,
                                               receiver.signal,
                                               receiver.plugin.name,
                                               receiver.description))