public function sanitizeUnitOpitons($arrUnitOptions)
 {
     if (isset($arrUnitOptions['count'])) {
         // the item lookup search unit type does not have a count field
         $arrUnitOptions['count'] = AmazonAutoLinks_Utilities::fixNumber($arrUnitOptions['count'], 10, 1, $this->getMaximumProductLinkCount());
     }
     $arrUnitOptions['image_size'] = AmazonAutoLinks_Utilities::fixNumber($arrUnitOptions['image_size'], 160, 0, 500);
     if (isset($arrUnitOptions['column'])) {
         $arrUnitOptions['column'] = AmazonAutoLinks_Utilities::fixNumber($arrUnitOptions['column'], 4, 1, $this->getMaxSupportedColumnNumber());
     }
     // For the 'item_lookup' unit type
     if (isset($arrUnitOptions['unit_type']) && 'item_lookup' === $arrUnitOptions['unit_type']) {
         $this->sanitizeUnitOptions_ItemLookUp($arrUnitOptions);
     }
     return $arrUnitOptions;
 }