Method merge

packages/zod/src/v4/classic/schemas.ts:1408–1408

* @deprecated Use [`A.extend(B.shape)`](https://zod.dev/api?id=extend) instead.

(other: U)

   * @deprecated Use [`A.extend(B.shape)`](https://zod.dev/api?id=extend) instead.
   */
  merge<U extends ZodObject>(other: U): ZodObject<util.Extend<Shape, U["shape"]>, U["_zod"]["config"]>;

  pick<M extends util.Mask<keyof Shape>>(
    mask: M & Record<Exclude<keyof M, keyof Shape>, never>