syntax_data: {"ast_node_type":"other","tokens":[{"end":29,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:         if a.ctxt == b.ctxt {
context_before:         let (a, b) = (a_orig.data(), b_orig.data());
context_after:             return Ok((a, b, if a.parent == b.parent { a.parent } else { None }));