# File lib/fog/aws/requests/redshift/describe_cluster_versions.rb, line 26
        def describe_cluster_versions(options = {})
          cluster_version                = options[:cluster_version]
          cluster_parameter_group_family = options[:cluster_parameter_group_family]
          marker                         = options[:marker]
          max_records                    = options[:max_records]

          path = "/"
          params = {
            :idempotent => true,
            :headers    => {},
            :path       => path,
            :method     => :get,
            :query      => {},
            :parser     => Fog::Parsers::Redshift::AWS::DescribeClusterVersions.new
          }

          params[:query]['Action']                      = 'DescribeClusterVersions'
          params[:query]['ClusterVersion']              = cluster_version if cluster_version
          params[:query]['ClusterParameterGroupFamily'] = cluster_parameter_group_family if cluster_parameter_group_family
          params[:query]['Marker']                      = marker if marker
          params[:query]['MaxRecords']                  = max_records if max_records

          request(params)
        end