# File lib/fog/aws/requests/redshift/describe_clusters.rb, line 24
        def describe_clusters(options = {})
          cluster_identifier = options[:cluster_identifier]
          marker             = options[:marker]
          max_records        = options[:max_records]

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

          params[:query]['Action']            = 'DescribeClusters'
          params[:query]['ClusterIdentifier'] = cluster_identifier if cluster_identifier
          params[:query]['MaxRecords']        = max_records if max_records
          params[:query]['Marker']            = marker if marker

          request(params)
        end