/**
  * Confirm Product Instance 
  * The ConfirmProductInstance operation returns true if the specified product code
  * is attached to the specified instance. The operation returns false if the
  * product code is not attached to the instance.
  * The ConfirmProductInstance operation can only be executed by the owner of the
  * AMI. This feature is useful when an AMI owner is providing support and wants to
  * verify whether a user's instance is eligible.
  * 
  * @see http://docs.amazonwebservices.com/AWSEC2/2008-12-01/DeveloperGuide/ApiReference-Query-ConfirmProductInstance.html
  * @param mixed $request array of parameters for Amazon_EC2_Model_ConfirmProductInstanceRequest request
  * or Amazon_EC2_Model_ConfirmProductInstanceRequest object itself
  * @see Amazon_EC2_Model_ConfirmProductInstance
  * @return Amazon_EC2_Model_ConfirmProductInstanceResponse Amazon_EC2_Model_ConfirmProductInstanceResponse
  *
  * @throws Amazon_EC2_Exception
  */
 public function confirmProductInstance($request)
 {
     if (!$request instanceof Amazon_EC2_Model_ConfirmProductInstanceRequest) {
         require_once 'Amazon/EC2/Model/ConfirmProductInstanceRequest.php';
         $request = new Amazon_EC2_Model_ConfirmProductInstanceRequest($request);
     }
     require_once 'Amazon/EC2/Model/ConfirmProductInstanceResponse.php';
     return Amazon_EC2_Model_ConfirmProductInstanceResponse::fromXML($this->_invoke($this->_convertConfirmProductInstance($request)));
 }
 /**
  * Confirm Product Instance 
  * The ConfirmProductInstance operation returns true if the specified product code
  * is attached to the specified instance. The operation returns false if the
  * product code is not attached to the instance.
  * The ConfirmProductInstance operation can only be executed by the owner of the
  * AMI. This feature is useful when an AMI owner is providing support and wants to
  * verify whether a user's instance is eligible.
  *   
  * @see http://docs.amazonwebservices.com/AWSEC2/2008-12-01/DeveloperGuide/ApiReference-Query-ConfirmProductInstance.html      
  * @param mixed $request array of parameters for Amazon_EC2_Model_ConfirmProductInstance request or Amazon_EC2_Model_ConfirmProductInstance object itself
  * @see Amazon_EC2_Model_ConfirmProductInstance
  * @return Amazon_EC2_Model_ConfirmProductInstanceResponse Amazon_EC2_Model_ConfirmProductInstanceResponse
  *
  * @throws Amazon_EC2_Exception
  */
 public function confirmProductInstance($request)
 {
     require_once 'Amazon/EC2/Model/ConfirmProductInstanceResponse.php';
     return Amazon_EC2_Model_ConfirmProductInstanceResponse::fromXML($this->_invoke('ConfirmProductInstance'));
 }