def masterfile_name(element_key)
      file_list = load(element_key)
      unless file_list.nil?
        file_list.each do |file|
          return file.fileName if file.fileStorageType.downcase! == 'master'
        end
      end
      ''
    end
def masterfile_name(element_key)
      file_list = load(element_key)
      unless file_list.nil?
        file_list.each do |file|
          return file.fileName if file.fileStorageType.downcase! == 'master'
        end
      end
      ''
    end
Returns the name of a masterfile if present