# File lib/fog/aws/requests/rds/describe_db_clusters.rb, line 16
        def describe_db_clusters(identifier=nil, opts={})
          params = {}
          params['DBClusterIdentifier'] = identifier         if identifier
          params['Marker']              = opts[:marker]      if opts[:marker]
          params['MaxRecords']          = opts[:max_records] if opts[:max_records]

          request({
            'Action' => 'DescribeDBClusters',
            :parser  => Fog::Parsers::AWS::RDS::DescribeDBClusters.new
          }.merge(params))
        end