'Return information about primary keys in `table_name`.
Deprecated.  This method is only called by the default
implementation of :meth:`.Dialect.get_pk_constraint`.  Dialects should
instead implement the :meth:`.Dialect.get_pk_constraint` method directly.'

def get_primary_keys(self, connection, table_name, schema=None, **kw):

    raise NotImplementedError()
