syntax_data: {"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:             // a separate def-id for these bodies.
context_before:             // FIXME(async_closures): This shouldn't be needed, and we should be populating
context_after:             let mut coroutine_kind = args.as_coroutine_closure().kind();