{"ast_node_type":"other","tokens":[{"end":99,"kind":"keyword","start":0,"text":"(TyKind::Array(ty_a,"}]}
            (TyKind::Array(ty_a, const_a), TyKind::Array(ty_b, const_b)) if const_a == const_b => {
            }
                self.zip_tys(variance, ty_a, ty_b)?