def drawAsInfinite(requestContext, seriesList):
  """
  Takes one metric or a wildcard seriesList.
  If the value is zero, draw the line at 0.  If the value is above zero, draw
  the line at infinity. If the value is null or less than zero, do not draw
  the line.

  Useful for displaying on/off metrics, such as exit codes. (0 = success,
  anything else = failure.)

  Example:

  .. code-block:: none

    drawAsInfinite(Testing.script.exitCode)

  """
  for series in seriesList:
    series.options['drawAsInfinite'] = True
    series.name = 'drawAsInfinite(%s)' % series.name
  return seriesList