{"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"(ty::FnDef(..),"}]}
                    (ty::FnDef(..), ty::FnDef(..)) => {
                match (prev_ty.kind(), new_ty.kind()) {
                        // Don't reify if the function types have a LUB, i.e., they