def indent_insert(self):
            """ Indent token. """
            # Child of root and no empty node
            if (
                self.level > 0 and not (self.end and self.list[self.pos - 1].start)
            ) or (  # not empty node:
                self.end and not self.list[self.pos - 1].start
            ):
                return self.indent_create(self.level)
            return ""