{"ast_node_type":"other","tokens":[{"end":57,"kind":"keyword","start":0,"text":"BuiltinUnusedDocCommentSub::PlainHelp"}]}
                    BuiltinUnusedDocCommentSub::PlainHelp
                AttrKind::DocComment(CommentKind::Line, _) | AttrKind::Normal(..) => {
                }