def get_bin_notification_session(self, bin_receiver=None, proxy=None):
if proxy is None:<EOL><INDENT>raise NullArgument()<EOL><DEDENT>raise Unimplemented()<EOL>
Gets the notification session for subscribing to changes to a bin.

        arg:    bin_receiver (osid.resource.BinReceiver): notification
                callback
        arg:    proxy (osid.proxy.Proxy): a proxy
        return: (osid.resource.BinNotificationSession) - a
                ``BinNotificationSession``
        raise:  NullArgument - ``bin_receiver`` or ``proxy`` is ``null``
        raise:  OperationFailed - unable to complete request
        raise:  Unimplemented - ``supports_bin_notification()`` is
                ``false``
        *compliance: optional -- This method must be implemented if
        ``supports_bin_notification()`` is ``true``.*