@staticmethod<EOL><INDENT>def _unique_constraint_name(table: str, field, keys):<DEDENT>
postfix = '<STR_LIT:_>'.join(keys)<EOL>return '<STR_LIT>'.format(<EOL>table=table,<EOL>field=field.column,<EOL>postfix=postfix<EOL>)<EOL>
Gets the name for a UNIQUE INDEX that applies
        to one or more keys in a hstore field.

        Arguments:
            table:
                The name of the table the field is
                a part of.

            field:
                The hstore field to create a
                UNIQUE INDEX for.

            key:
                The name of the hstore key
                to create the name for.

                This can also be a tuple
                of multiple names.

        Returns:
            The name for the UNIQUE index.