syntax_data: {"ast_node_type":"other","tokens":[{"end":13,"kind":"keyword","start":0,"text":"}"}]}
source_snippet:             }
context_before:                 ty::CoroutineWitness(did, args.try_fold_with(folder)?)
context_after:             ty::Closure(did, args) => ty::Closure(did, args.try_fold_with(folder)?),