/**
  * 
  * 'Operation' => 'ItemSearch',    // ItemSearch, ItemLookup, SimilarityLookup
  * @since   2.0.2
  * @see     http://docs.aws.amazon.com/AWSECommerceService/latest/DG/ItemSearch.html
  * @see     http://docs.aws.amazon.com/AWSECommerceService/latest/DG/PowerSearchSyntax.html
  */
 protected function getAPIParameterArray($sOperation = 'ItemSearch', $iItemPage = null)
 {
     $_bIsIndexAllOrBlended = 'All' === $this->oUnitOption->get('SearchIndex') || 'Blended' === $this->oUnitOption->get('SearchIndex');
     $_sTitle = $this->trimDelimitedElements($this->oUnitOption->get('Title'), ',', false);
     $_aParams = array('Keywords' => $this->trimDelimitedElements($this->oUnitOption->get('Keywords'), ',', false), 'Power' => $this->oUnitOption->get('Power'), 'Title' => $_bIsIndexAllOrBlended ? null : ($_sTitle ? $_sTitle : null), 'Operation' => $this->oUnitOption->get('Operation'), 'SearchIndex' => $this->oUnitOption->get('SearchIndex'), $this->oUnitOption->get('search_by') => $this->oUnitOption->get('additional_attribute') ? $this->oUnitOption->get('additional_attribute') : null, 'Sort' => $_bIsIndexAllOrBlended ? null : $this->oUnitOption->get('Sort'), 'ResponseGroup' => "Large", 'BrowseNode' => !$_bIsIndexAllOrBlended && $this->oUnitOption->get('BrowseNode') ? $this->oUnitOption->get('BrowseNode') : null, 'Availability' => $this->oUnitOption->get('Availability') ? 'Available' : null, 'Condition' => $_bIsIndexAllOrBlended ? null : $this->oUnitOption->get('Condition'), 'IncludeReviewsSummary' => "True", 'MaximumPrice' => !$_bIsIndexAllOrBlended && $this->oUnitOption->get('MaximumPrice') ? $this->oUnitOption->get('MaximumPrice') : null, 'MinimumPrice' => !$_bIsIndexAllOrBlended && $this->oUnitOption->get('MinimumPrice') ? $this->oUnitOption->get('MinimumPrice') : null, 'MinPercentageOff' => $this->oUnitOption->get('MinPercentageOff') ? $this->oUnitOption->get('MinPercentageOff') : null, 'MerchantId' => 'Amazon' === $this->oUnitOption->get('MerchantId') ? 'Amazon' : null, 'MarketplaceDomain' => 'Marketplace' === $this->oUnitOption->get('SearchIndex') ? AmazonAutoLinks_Property::getMarketplaceDomainByLocale($this->oUnitOption->get('country')) : null);
     $_aParams = $iItemPage ? $_aParams + array('ItemPage' => $iItemPage) : $_aParams;
     // 3+ When the Power argument is set, the SearchIndex must not be set.
     // and when the SearchIndex is not set, Sort cannot be set.
     if ($_aParams['Power']) {
         unset($_aParams['Sort']);
     }
     unset($_aParams['']);
     // if ( $_aParams[ 'Title' ] ) {
     // unset(
     // $_aParams[ 'SearchIndex' ]
     // );
     // $_aParams[ 'SearchIndex' ] = 'Books';
     // }
     return $_aParams;
 }