code: protected function loadFeeIds($feeIds)
      {
          if (is_null($this->feeIdDescription)) {
              $this->feeIdDescription = new FeeIdDescription();
          }
          foreach ($feeIds as $feeId) {
              $this->feeIdDescription->feeId[] = new FeeId($feeId->type, $feeId->number);
          }
      }
docs: Set fee ids if needed
  
  @param MPFeeId[] $feeIds