syntax_data: {"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"CoroutineKind::Desugared(CoroutineDesugaring::Async,"}]}
source_snippet:             CoroutineKind::Desugared(CoroutineDesugaring::Async, _) => {
context_before:         let none_value = match self.coroutine_kind {
context_after:                 span_bug!(body.span, "`Future`s are not fused inherently")