syntax_data: {"ast_node_type":"other","tokens":[{"end":48,"kind":"keyword","start":0,"text":"visitor.visit_fn_ret_ty(output);"}]}
source_snippet:                 visitor.visit_fn_ret_ty(output);
context_before:                 let mut visitor = RPITVisitor { tcx, synthetics: vec![], data, disambiguator };
context_after:                 let defs = visitor