{"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"///"}]}
    /// * `/** doc */` returns `Some(("doc", CommentKind::Block))`.
    /// * `///doc` returns `Some(("doc", CommentKind::Line))`.
    /// * `#[doc = "doc"]` returns `Some(("doc", CommentKind::Line))`.