    # File lib/fog/aws/requests/rds/revoke_db_security_group_ingress.rb, line 18
            def revoke_db_security_group_ingress(name, opts={})
              unless opts.key?('CIDRIP') || (opts.key?('EC2SecurityGroupName') && opts.key?('EC2SecurityGroupOwnerId'))
                raise ArgumentError, 'Must specify CIDRIP, or both EC2SecurityGroupName and EC2SecurityGroupOwnerId'
              end

              request({
                'Action'  => 'RevokeDBSecurityGroupIngress',
                :parser   => Fog::Parsers::AWS::RDS::RevokeDBSecurityGroupIngress.new,
                'DBSecurityGroupName' => name
              }.merge(opts))

            end