syntax_data: {"ast_node_type":"other","tokens":[{"end":37,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// - [`Self::in_external_macro`]
context_before:     /// - [`Self::find_ancestor_not_from_macro`]
context_after:     pub fn find_ancestor_not_from_extern_macro(mut self, sm: &SourceMap) -> Option<Span> {