Function stateful

tfjs-layers/src/engine/container.ts:1345–1360

* Determine whether the container is stateful. * * Porting Note: this is the equivalent of the stateful @property of * the Container class in PyKeras.

()

   *   the Container class in PyKeras.
   */
  override get stateful(): boolean {
    // Porting Note: This check is to prevent inadvertent setting of the
    //   _stateful property of the Container instance.
    if (this._stateful) {
      throw new ValueError(
          'Container instance unexpectedly has _stateful = true. The ' +
          'statefulness of a Container is determined by the Layers it ' +
          'contains. Its _stateful property must remain the default false.');
    }
    for (const layer of this.layers) {
      if (layer.stateful) {
        return true;
      }
    }
    return false;
  }

  /**
   * Reset the state of all stateful constituent layers (if any).