syntax_data: {"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":"cx.infcx.typing_env(cx.param_env),"}]}
source_snippet:                             cx.infcx.typing_env(cx.param_env),
context_before:                             cx.tcx,
context_after:                             cx.def_id.into(),