syntax_data: {"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"TupleArgumentsFlag::Yes"}]}
source_snippet:         TupleArgumentsFlag::Yes => Ty::new_tup(tcx, sig.skip_binder().inputs()),
context_before:         TupleArgumentsFlag::No => sig.skip_binder().inputs()[0],
context_after:     };