syntax_data: {"ast_node_type":"other","tokens":[{"end":13,"kind":"keyword","start":0,"text":"}"}]}
source_snippet:             }
context_before:                 make_aggregate_adt(poll_def_id, variant_idx, args, operands)
context_after:             CoroutineKind::Desugared(CoroutineDesugaring::Gen, _) => {