/**
  * Revoke Security Group Ingress 
  * The RevokeSecurityGroupIngress operation revokes permissions from a security
  * group. The permissions used to revoke must be specified using the same values
  * used to grant the permissions.
  * Permissions are specified by IP protocol (TCP, UDP, or ICMP), the source of the
  * request (by IP range or an Amazon EC2 user-group pair), the source and
  * destination port ranges (for TCP and UDP), and the ICMP codes and types (for
  * ICMP).
  * Permission changes are quickly propagated to instances within the security
  * group. However, depending on the number of instances in the group, a small
  * delay is might occur, .
  * When revoking a user/group pair permission, GroupName, SourceSecurityGroupName
  * and SourceSecurityGroupOwnerId must be specified. When authorizing a CIDR IP
  * permission, GroupName, IpProtocol, FromPort, ToPort and CidrIp must be
  * specified. Mixing these two types of parameters is not allowed.
  * 
  * @see http://docs.amazonwebservices.com/AWSEC2/2008-12-01/DeveloperGuide/ApiReference-Query-RevokeSecurityGroupIngress.html
  * @param mixed $request array of parameters for Amazon_EC2_Model_RevokeSecurityGroupIngressRequest request
  * or Amazon_EC2_Model_RevokeSecurityGroupIngressRequest object itself
  * @see Amazon_EC2_Model_RevokeSecurityGroupIngress
  * @return Amazon_EC2_Model_RevokeSecurityGroupIngressResponse Amazon_EC2_Model_RevokeSecurityGroupIngressResponse
  *
  * @throws Amazon_EC2_Exception
  */
 public function revokeSecurityGroupIngress($request)
 {
     if (!$request instanceof Amazon_EC2_Model_RevokeSecurityGroupIngressRequest) {
         require_once 'Amazon/EC2/Model/RevokeSecurityGroupIngressRequest.php';
         $request = new Amazon_EC2_Model_RevokeSecurityGroupIngressRequest($request);
     }
     require_once 'Amazon/EC2/Model/RevokeSecurityGroupIngressResponse.php';
     return Amazon_EC2_Model_RevokeSecurityGroupIngressResponse::fromXML($this->_invoke($this->_convertRevokeSecurityGroupIngress($request)));
 }
 /**
  * Revoke Security Group Ingress 
  * The RevokeSecurityGroupIngress operation revokes permissions from a security
  * group. The permissions used to revoke must be specified using the same values
  * used to grant the permissions.
  * Permissions are specified by IP protocol (TCP, UDP, or ICMP), the source of the
  * request (by IP range or an Amazon EC2 user-group pair), the source and
  * destination port ranges (for TCP and UDP), and the ICMP codes and types (for
  * ICMP).
  * Permission changes are quickly propagated to instances within the security
  * group. However, depending on the number of instances in the group, a small
  * delay is might occur, .
  * When revoking a user/group pair permission, GroupName, SourceSecurityGroupName
  * and SourceSecurityGroupOwnerId must be specified. When authorizing a CIDR IP
  * permission, GroupName, IpProtocol, FromPort, ToPort and CidrIp must be
  * specified. Mixing these two types of parameters is not allowed.
  *   
  * @see http://docs.amazonwebservices.com/AWSEC2/2008-12-01/DeveloperGuide/ApiReference-Query-RevokeSecurityGroupIngress.html      
  * @param mixed $request array of parameters for Amazon_EC2_Model_RevokeSecurityGroupIngress request or Amazon_EC2_Model_RevokeSecurityGroupIngress object itself
  * @see Amazon_EC2_Model_RevokeSecurityGroupIngress
  * @return Amazon_EC2_Model_RevokeSecurityGroupIngressResponse Amazon_EC2_Model_RevokeSecurityGroupIngressResponse
  *
  * @throws Amazon_EC2_Exception
  */
 public function revokeSecurityGroupIngress($request)
 {
     require_once 'Amazon/EC2/Model/RevokeSecurityGroupIngressResponse.php';
     return Amazon_EC2_Model_RevokeSecurityGroupIngressResponse::fromXML($this->_invoke('RevokeSecurityGroupIngress'));
 }