def get_reader_time_step_values(extensions, reader_description):
    """Get the XML content for reader time step values the Python path when
    making a ParaView plugin.
    """
    return (
        """<DoubleVectorProperty
      name="TimestepValues"
      repeatable="1"
      information_only="1">
      <TimeStepsInformationHelper/>
          <Documentation>
          Available timestep values.
          </Documentation>
      </DoubleVectorProperty>
      <Hints>
          <ReaderFactory extensions="%s"
                  file_description="%s" />
      </Hints>
      """
         % (extensions, reader_description))
