* @param {callback} [onProgress] A function to be called while the loading is in progress. The argument will be the XMLHttpRequest instance, which contains total and Integer bytes.
* @param {callback} [onError] A function to be called if an error occurs during loading. The function receives the error as an argument.
* @param {string} [crossOrigin] CORS value
* @param {Object} [materialOptions] Set material loading options for MTLLoader
* @param {Object} [materialOptions] Set material loading options for MTLLoader