{"ast_node_type":"function","tokens":[{"end":79,"kind":"keyword","start":0,"text":"pub"}]}
    pub fn new_ref(reg: Region, pointee_ty: Ty, mutability: Mutability) -> Ty {
    /// Create a new reference type.
        Ty::from_rigid_kind(RigidTy::Ref(reg, pointee_ty, mutability))