syntax_data: {"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:                         if tcx.optimized_mir(coroutine_def_id).coroutine_drop_async().is_some() {
context_before:                         // Currently just ignored
context_after:                             ty::InstanceKind::DropGlue(def_id, None)