/**
  * Filter the query by a related LeasingTimelineActivity object
  *
  * @param   LeasingTimelineActivity|PropelObjectCollection $leasingTimelineActivity  the related object to use as filter
  * @param     string $comparison Operator to use for the column comparison, defaults to Criteria::EQUAL
  *
  * @return                 LeasingLeadTypeQuery The current query, for fluid interface
  * @throws PropelException - if the provided filter is invalid.
  */
 public function filterByLeasingTimelineActivity($leasingTimelineActivity, $comparison = null)
 {
     if ($leasingTimelineActivity instanceof LeasingTimelineActivity) {
         return $this->addUsingAlias(LeasingLeadTypePeer::ID, $leasingTimelineActivity->getLeadTypeId(), $comparison);
     } elseif ($leasingTimelineActivity instanceof PropelObjectCollection) {
         return $this->useLeasingTimelineActivityQuery()->filterByPrimaryKeys($leasingTimelineActivity->getPrimaryKeys())->endUse();
     } else {
         throw new PropelException('filterByLeasingTimelineActivity() only accepts arguments of type LeasingTimelineActivity or PropelCollection');
     }
 }