Method extend

packages/effect/src/Schema.ts:14036–14036

* Returns a function that creates a schema-backed subclass with this class's * fields plus additional fields. * * **When to use** * * Use when you need a subclass whose constructor validates both inherited * fields and newly added fields. * * **Details** * * The returne

(
    identifier: string
  )

   * such as `isMaxProperties` count inherited fields too.
   */
  extend<Extended = never, Static = {}, Brand = {}>(
    identifier: string
  ): {
    <NewFields extends Struct.Fields>(