def decode(self, envelope, session, **kwargs):
		""" :meth:`.WMessengerOnionCoderLayerProto.decode` method implementation.

		:param envelope: original envelope
		:param session: original session
		:param kwargs: additional arguments

		:return: WMessengerBytesEnvelope
		"""
		return WMessengerBytesEnvelope(b64decode(envelope.message()), meta=envelope)
:meth:`.WMessengerOnionCoderLayerProto.decode` method implementation.

		:param envelope: original envelope
		:param session: original session
		:param kwargs: additional arguments

		:return: WMessengerBytesEnvelope