syntax_data: {"ast_node_type":"other","tokens":[{"end":48,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // unlike for all other coroutine kinds.
context_before:         // Iterator::next doesn't accept a pinned argument,
context_after:         CoroutineKind::Desugared(CoroutineDesugaring::Gen, _) => {}