getEnvironmentNode( scene ) {

		this.updateEnvironment( scene );

		let environmentNode = null;

		if ( scene.environmentNode && scene.environmentNode.isNode ) {

			environmentNode = scene.environmentNode;

		} else {

			const sceneData = this.get( scene );

			if ( sceneData.environmentNode ) {

				environmentNode = sceneData.environmentNode;

			}

		}

		return environmentNode;

	}
Returns an environment node for the current configured
scene environment.

@param {Scene} scene - The scene.
@return {Node} A node representing the current scene environment.