if issubclass(table, tables.Named):
assert issubclass(table, tables.OfficiallyNamed) or issubclass(table, tables.UnofficiallyNamed), table
assert hasattr(table, 'identifier'), table
if issubclass(table, tables.Named):
assert issubclass(table, tables.OfficiallyNamed) or issubclass(table, tables.UnofficiallyNamed), table
assert hasattr(table, 'identifier'), table