def file_handler
      @_element_file_handler = ElementFileHandler.new(keytechkit.base_url, keytechkit.username, keytechkit.password) if @_element_file_handler.nil?
      @_element_file_handler
    end
def file_handler
      @_element_file_handler = ElementFileHandler.new(keytechkit.base_url, keytechkit.username, keytechkit.password) if @_element_file_handler.nil?
      @_element_file_handler
    end
Returns the file object.
 Every element can have a Masterfile and one or more preview files