parse( scene, onDone, onError, options ) {

		this.parseAsync( scene, options ).then( onDone ).catch( onError );

	}
Parse the given 3D object and generates the USDZ output.

@param {Object3D} scene - The 3D object to export.
@param {USDZExporter~OnDone} onDone - A callback function that is executed when the export has finished.
@param {USDZExporter~OnError} onError - A callback function that is executed when an error happens.
@param {USDZExporter~Options} options - The export options.