Creates several Game Objects and adds them to this group.
If the group becomes Phaser.GameObjects.Group#isFull, no further Game Objects are created.
|Phaser.Types.GameObjects.Group.GroupCreateConfig | Array.<Phaser.Types.GameObjects.Group.GroupCreateConfig>
Creation settings. This can be a single configuration object or an array of such objects, which will be applied in turn.
The newly created Game Objects.