def depart_line_block(self, node: Element) -> None:
    self.body.append('@end display\n')
    if (not isinstance(node.parent, nodes.line_block)):
        self.body.append('\n\n')
def depart_line_block(self, node: Element) -> None:
    self.body.append('@end display\n')
    if (not isinstance(node.parent, nodes.line_block)):
        self.body.append('\n\n')