# File lib/fog/aws/requests/rds/describe_db_parameter_groups.rb, line 16
        def describe_db_parameter_groups(name=nil, opts={})
          params={}
          if opts[:marker]
            params['Marker'] = opts[:marker]
          end
          if name
            params['DBParameterGroupName'] = name
          end
          if opts[:max_records]
            params['MaxRecords'] = opts[:max_records]
          end
          
          request({
            'Action'  => 'DescribeDBParameterGroups',
            :parser   => Fog::Parsers::AWS::RDS::DescribeDBParameterGroups.new
          }.merge(params))
        end