#NEWLINE# def inbox_post_tracks( self , canonical_username , tracks , message , callback = None ) : #NEWLINE# #INDENT# "Post a ``message`` and one or more ``tracks`` to the inbox of the\n        user with the given ``canonical_username``.\n\n        ``tracks`` can be a single :class:`~spotify.Track` or a list of\n        :class:`~spotify.Track` objects.\n\n        Returns an :class:`InboxPostResult` that can be used to check if the\n        request completed successfully.\n\n        If callback isn't :class:`None`, it is called with an\n        :class:`InboxPostResult` instance when the request has completed.\n        " #NEWLINE# return spotify . InboxPostResult ( self , canonical_username , tracks , message , callback )