constructor( specular = true ) {

		super();

		/**
		 * Whether specular is supported or not. Set this to `false` if you are
		 * looking for a Lambert-like material meaning a material for non-shiny
		 * surfaces, without specular highlights.
		 *
		 * @type {boolean}
		 * @default true
		 */
		this.specular = specular;

	}
Constructs a new phong lighting model.

@param {boolean} [specular=true] - Whether specular is supported or not.