syntax_data: {"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"Some(SimplifiedType::Closure(def_id))"}]}
source_snippet:             Some(SimplifiedType::Closure(def_id))
context_before:         ty::FnDef(def_id, _) | ty::Closure(def_id, _) | ty::CoroutineClosure(def_id, _) => {
context_after:         }