# File lib/fog/aws/requests/rds/create_db_security_group.rb, line 29
        def create_db_security_group(name, description = name)
          response = Excon::Response.new
          if self.data[:security_groups] and self.data[:security_groups][name]
            raise Fog::AWS::RDS::IdentifierTaken.new("DBInstanceAlreadyExists => The security group '#{name}' already exists")
          end
          
          data = {
            'DBSecurityGroupName' => name,
            'DBSecurityGroupDescription' => description,
            'EC2SecurityGroups' => [],
            'IPRanges' => [],
            'OwnerId' => '0123456789'
          }
          self.data[:security_groups][name] = data
          response.body = {
            "ResponseMetadata"=>{ "RequestId"=> Fog::AWS::Mock.request_id },
            'CreateDBSecurityGroupResult' => { 'DBSecurityGroup' => data }
          }
          response
          
        end