def get_tables():
    """Returns a C{list} of domain classes

        This should return a C{list} of tuples, each one containing the
        domain path as the first item, and a list of classes as
        the second. e.g. A 'from a.b import C, D' should be
        translated into the C{tuple} ('a.b', ['C', 'D']).
        @note: this information is used for database synchronization

        :returns: a C{list} of C{tuple} containing domain info
        """
    pass
