syntax_data: {"ast_node_type":"other","tokens":[{"end":81,"kind":"keyword","start":0,"text":"hir::CoroutineKind::Desugared(hir::CoroutineDesugaring::Async,"}]}
source_snippet:                 hir::CoroutineKind::Desugared(hir::CoroutineDesugaring::Async, _)
context_before:                 }
context_after:                 | hir::CoroutineKind::Desugared(hir::CoroutineDesugaring::AsyncGen, _)