syntax_data: {"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"tcx.closure_env_ty(coroutine_ty,"}]}
source_snippet:                     tcx.closure_env_ty(coroutine_ty, coroutine_kind, tcx.lifetimes.re_erased)
context_before:                 } else {
context_after:                 };