loadVPD( url, isUnicode, onLoad, onProgress, onError ) {

			const parser = this._getParser();

			this.loader.setMimeType( isUnicode ? undefined : 'text/plain; charset=shift_jis' ).setPath( this.animationPath ).setResponseType( 'text' ).setRequestHeader( this.requestHeader ).setWithCredentials( this.withCredentials ).load( url, function ( text ) {

				onLoad( parser.parseVpd( text, true ) );

			}, onProgress, onError );

		}
Loads .vpd file as an Object.

@param {string} url - url to .vpd file
@param {boolean} isUnicode
@param {function} onLoad
@param {function} onProgress
@param {function} onError