syntax_data: {"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"coroutine_closure_def_id,"}]}
source_snippet:                                     coroutine_closure_def_id,
context_before:                                 def: ty::InstanceKind::ConstructCoroutineInClosureShim {
context_after:                                     receiver_by_ref: target_kind != ty::ClosureKind::FnOnce,