code: function (header) {
      this.httpHeader = parseHTTPHeader(header);
  
      if (this.httpHeader[ 'content-length' ]) this.size = this.httpHeader[ 'content-length' ];
  
      if (this.httpHeader[ 'content-type' ]) this.mime = this.httpHeader[ 'content-type' ];
  
      if (this.httpHeader[ 'last-modified' ]) this.lastModified = new Date(this.httpHeader[ 'last-modified' ]);
    }
docs: This function will be called in the constructor of FileMeta. It will parse the HTTP
  headers returned by a server and save useful information for development.
  
  @method setFromHTTPHeader
  @param {String} header HTTP header returned by the server