syntax_data: {"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":")"}]}
source_snippet:     ) -> Result<(SpanData, SpanData, Option<LocalDefId>), Span> {
context_before:         b_orig: Span,
context_after:         let (a, b) = (a_orig.data(), b_orig.data());