/**
  * Implements CommerceLicenseBillingUsageGroupInterface::isComplete().
  */
 public function isComplete(CommerceLicenseBillingCycle $billingCycle)
 {
     // Usage is reported right away, so it can always be considered complete.
     if (!empty($this->groupInfo['immediate'])) {
         return TRUE;
     } else {
         return parent::isComplete($billingCycle);
     }
 }