code: public function getMatchingProduct($request)
      {
          if (!($request instanceof MarketplaceWebServiceProducts_Model_GetMatchingProductRequest)) {
              $request = new MarketplaceWebServiceProducts_Model_GetMatchingProductRequest($request);
          }
          $parameters = $request->toQueryParameterArray();
          $parameters['Action'] = 'GetMatchingProduct';
          $httpResponse = $this->_invoke($parameters);
  
          $response = MarketplaceWebServiceProducts_Model_GetMatchingProductResponse::fromXML($httpResponse['ResponseBody']);
          $response->setResponseHeaderMetadata($httpResponse['ResponseHeaderMetadata']);
          return $response;
      }
docs: Get Matching Product
  GetMatchingProduct will return the details (attributes) for the
  given ASIN.
  
  @param mixed $request array of parameters for MarketplaceWebServiceProducts_Model_GetMatchingProduct request or MarketplaceWebServiceProducts_Model_GetMatchingProduct object itself
  @see MarketplaceWebServiceProducts_Model_GetMatchingProductRequest
  @return MarketplaceWebServiceProducts_Model_GetMatchingProductResponse
  
  @throws MarketplaceWebServiceProducts_Exception