Optional
Sets Phaser.GameObjects.Group#active.
Sets Phaser.GameObjects.Group#classType.
Sets Phaser.GameObjects.Group#createCallback.
Sets Phaser.GameObjects.Group#createMultipleCallback.
Sets Phaser.GameObjects.Group#defaultFrame.
Sets Phaser.GameObjects.Group#defaultKey.
Sets Phaser.GameObjects.Group#maxSize.
Sets Phaser.GameObjects.Group#name.
Sets Phaser.GameObjects.Group#removeCallback.
Sets Phaser.GameObjects.Group#runChildUpdate.
Sets Phaser.GameObjects.Group#active.