/**
  * Shortcut for getting a series of Intervals from a diagram
  * @param object Diagram $oDiagram
  * @return object Interval
  */
 public static function getIntervalsFromDiagram($oDiagram)
 {
     return Interval::getIntervals($oDiagram->getActualGrain(), $oDiagram->getStartTime(), $oDiagram->getEndTime(), $oDiagram->getModLabel());
 }