syntax_data: {"ast_node_type":"other","tokens":[{"end":27,"kind":"keyword","start":0,"text":"ty::Tuple(tys)"}]}
source_snippet:         ty::Tuple(tys) => {
context_before:         }
context_after:             depth == 0 || tys.iter().any(|ty| may_contain_reference(ty, depth - 1, tcx))