# File lib/deltacloud/drivers/rhevm/rhevm_client.rb, line 437
    def cluster(cluster_id)
      headers = {
        :accept => "application/xml; detail=datacenters"
      }
      headers.merge!(client.auth_header)
      cluster_xml = RHEVM::client(client.api_entrypoint)["/clusters/%s" % cluster_id].get(headers)
      cluster = RHEVM::Cluster.new(self.client, cluster_xml)
      if cluster.datacenter && cluster.datacenter.id == client.datacenter_id
        cluster
      else
        nil
      end
    end