Return index entry text based on object type.

def get_index_text(self, modname, name_cls):
        """Return index entry text based on object type."""
        if self.objtype in ('class', 'record'):
            if not modname:
                return _('%s (built-in %s)') % (name_cls[0], self.objtype)
            return _('%s (%s in %s)') % (name_cls[0], self.objtype, modname)
        else:
            return ''