syntax_data: {"ast_node_type":"other","tokens":[{"end":36,"kind":"keyword","start":0,"text":"typing_env:"}]}
source_snippet:     typing_env: ty::TypingEnv<'tcx>,
context_before:     ty: Ty<'tcx>,
context_after:     adt_has_dtor: impl Fn(ty::AdtDef<'tcx>) -> Option<DtorType>,