@Override
public void attachChild(final IEntity pEntity) throws IllegalStateException {
this.assertEntityHasNoParent(pEntity);
if (this.mChildren == null) {
this.allocateChildren();
}
this.mChildren.add(pEntity);
pEntity.setParent(this);
pEntity.onAttached();
}
@Override
public void call(final IEntity pEntity) {
pEntity.setParent(null);
pEntity.onDetached();
}