code: function (header) {
    /**
     * This property is the mimetype for the file
     *
     * @property mime
     * @type {String}
     */
    this.mime = null;
  
    /**
     * This is the file size in bytes
     *
     * @type {Number}
     */
    this.size = null;
  
    /**
     * This is a Date object which represents the last time this file was modified
     *
     * @type {Date}
     */
    this.lastModified = null;
  
    /**
     * This is the HTTP header as an Object for the file.
     *
     * @type {Object}
     */
    this.httpHeader = null;
  
    if (header) this.setFromHTTPHeader(header);
  }
docs: FileMeta is a class which will hold file meta data. Each LoaderBase contains a FileMeta object
  that you can use to query.
  
  @class FileMeta
  @constructor
  @param {String} header HTTP Header sent when loading this file