syntax_data: {"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"ty::Closure(_,"}]}
source_snippet:             ty::Closure(_, args) => ty::UpvarArgs::Closure(args),
context_before:         let upvar_args = match closure_ty.kind() {
context_after:             ty::Coroutine(_, args) => ty::UpvarArgs::Coroutine(args),