# File lib/fog/aws/requests/rds/revoke_db_security_group_ingress.rb, line 17
        def revoke_db_security_group_ingress(name, opts={})
          unless opts.key?('CIDRIP') || ((opts.key?('EC2SecurityGroupName') || opts.key?('EC2SecurityGroupId')) && opts.key?('EC2SecurityGroupOwnerId'))
            raise ArgumentError, 'Must specify CIDRIP, or one of EC2SecurityGroupName or EC2SecurityGroupId, and EC2SecurityGroupOwnerId'
          end

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