syntax_data: {"ast_node_type":"other","tokens":[{"end":85,"kind":"keyword","start":0,"text":"Ty::new_imm_ref(tcx,"}]}
source_snippet:                             Ty::new_imm_ref(tcx, tcx.lifetimes.re_erased, closure_ty)
context_before:                         ty::ClosureKind::Fn => {
context_after:                         }