/**
  * Attach Volume 
  * Attach a previously created volume to a running instance.
  * 
  * @see http://docs.amazonwebservices.com/AWSEC2/2008-12-01/DeveloperGuide/ApiReference-Query-AttachVolume.html
  * @param mixed $request array of parameters for Amazon_EC2_Model_AttachVolumeRequest request
  * or Amazon_EC2_Model_AttachVolumeRequest object itself
  * @see Amazon_EC2_Model_AttachVolume
  * @return Amazon_EC2_Model_AttachVolumeResponse Amazon_EC2_Model_AttachVolumeResponse
  *
  * @throws Amazon_EC2_Exception
  */
 public function attachVolume($request)
 {
     if (!$request instanceof Amazon_EC2_Model_AttachVolumeRequest) {
         require_once 'Amazon/EC2/Model/AttachVolumeRequest.php';
         $request = new Amazon_EC2_Model_AttachVolumeRequest($request);
     }
     require_once 'Amazon/EC2/Model/AttachVolumeResponse.php';
     return Amazon_EC2_Model_AttachVolumeResponse::fromXML($this->_invoke($this->_convertAttachVolume($request)));
 }
 /**
  * Attach Volume 
  * Attach a previously created volume to a running instance.
  *   
  * @see http://docs.amazonwebservices.com/AWSEC2/2008-12-01/DeveloperGuide/ApiReference-Query-AttachVolume.html      
  * @param mixed $request array of parameters for Amazon_EC2_Model_AttachVolume request or Amazon_EC2_Model_AttachVolume object itself
  * @see Amazon_EC2_Model_AttachVolume
  * @return Amazon_EC2_Model_AttachVolumeResponse Amazon_EC2_Model_AttachVolumeResponse
  *
  * @throws Amazon_EC2_Exception
  */
 public function attachVolume($request)
 {
     require_once 'Amazon/EC2/Model/AttachVolumeResponse.php';
     return Amazon_EC2_Model_AttachVolumeResponse::fromXML($this->_invoke('AttachVolume'));
 }