/**
  * Describe Snapshots 
  * Describes the indicated snapshots, or in lieu of that, all snapshots owned by the caller.
  * 
  * @see http://docs.amazonwebservices.com/AWSEC2/2008-12-01/DeveloperGuide/ApiReference-Query-DescribeSnapshots.html
  * @param mixed $request array of parameters for Amazon_EC2_Model_DescribeSnapshotsRequest request
  * or Amazon_EC2_Model_DescribeSnapshotsRequest object itself
  * @see Amazon_EC2_Model_DescribeSnapshots
  * @return Amazon_EC2_Model_DescribeSnapshotsResponse Amazon_EC2_Model_DescribeSnapshotsResponse
  *
  * @throws Amazon_EC2_Exception
  */
 public function describeSnapshots($request)
 {
     if (!$request instanceof Amazon_EC2_Model_DescribeSnapshotsRequest) {
         require_once 'Amazon/EC2/Model/DescribeSnapshotsRequest.php';
         $request = new Amazon_EC2_Model_DescribeSnapshotsRequest($request);
     }
     require_once 'Amazon/EC2/Model/DescribeSnapshotsResponse.php';
     return Amazon_EC2_Model_DescribeSnapshotsResponse::fromXML($this->_invoke($this->_convertDescribeSnapshots($request)));
 }
 /**
  * Describe Snapshots 
  * Describes the indicated snapshots, or in lieu of that, all snapshots owned by the caller.
  *   
  * @see http://docs.amazonwebservices.com/AWSEC2/2008-12-01/DeveloperGuide/ApiReference-Query-DescribeSnapshots.html      
  * @param mixed $request array of parameters for Amazon_EC2_Model_DescribeSnapshots request or Amazon_EC2_Model_DescribeSnapshots object itself
  * @see Amazon_EC2_Model_DescribeSnapshots
  * @return Amazon_EC2_Model_DescribeSnapshotsResponse Amazon_EC2_Model_DescribeSnapshotsResponse
  *
  * @throws Amazon_EC2_Exception
  */
 public function describeSnapshots($request)
 {
     require_once 'Amazon/EC2/Model/DescribeSnapshotsResponse.php';
     return Amazon_EC2_Model_DescribeSnapshotsResponse::fromXML($this->_invoke('DescribeSnapshots'));
 }