syntax_data: {"ast_node_type":"other","tokens":[{"end":53,"kind":"keyword","start":0,"text":"transform.insert_none_ret_block(body)"}]}
source_snippet:                 transform.insert_none_ret_block(body)
context_before:             | CoroutineKind::Desugared(CoroutineDesugaring::Gen, _) => {
context_after:             }