constructor( property, inputType, renderer = null ) {

		super( property, inputType, renderer );

		/**
		 * The renderer the property belongs to. When no renderer is set,
		 * the node refers to the renderer of the current state.
		 *
		 * @type {?Renderer}
		 * @default null
		 */
		this.renderer = renderer;

		this.setGroup( renderGroup );

	}
Constructs a new renderer reference node.

@param {string} property - The name of the property the node refers to.
@param {string} inputType - The uniform type that should be used to represent the property value.
@param {?Renderer} [renderer=null] - The renderer the property belongs to. When no renderer is set,
the node refers to the renderer of the current state.