/**
  * Returns the maximum weights unit abreviation in context of
  * SilvercartConfig::DisplayWeightsInKilogram().
  * 
  * @return string
  */
 public function getMaximumWeightUnitAbreviation()
 {
     $maximumWeightUnitAbreviation = 'g';
     if (SilvercartConfig::DisplayWeightsInKilogram()) {
         $maximumWeightUnitAbreviation = 'kg';
     }
     return $maximumWeightUnitAbreviation;
 }