syntax_data: {"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"hir::CoroutineKind::Coroutine(_)"}]}
source_snippet:                     hir::CoroutineKind::Coroutine(_) => "coroutine",
context_before:                     ) => "gen closure",
context_after:                 }