Specifies an effect to apply to this Node.

Note that this is a conditional feature. See ConditionalFeature.EFFECT for more information.

There is a known limitation of mixing Effect with a 3D Transform. Effect is essentially a 2D image operation. The result of an Effect set on a Group node with 3D transformed children will cause its children to be rendered in order without Z-buffering applied between those children.

Returns:  the effect for this Node

@defaultValue null