syntax_data: {"ast_node_type":"other","tokens":[{"end":17,"kind":"keyword","start":0,"text":"{"}]}
source_snippet:                 {
context_before:                     && let Some(coroutine_kind) = tcx.coroutine_kind(def_id)
context_after:                     // FIXME: `def_span` for an fn-like coroutine will point to the fn's body