code: public static ns_cluster[] form_cluster(nitro_service client, ns_cluster[] resources) throws Exception
  	{
  		if(resources == null)
  			throw new Exception("Null resource array");
  		
  		
  		if(resources.length == 1)
  			return ((ns_cluster[]) resources[0].perform_operation(client, "form_cluster"));
  		
  		return ((ns_cluster[]) perform_operation_bulk_request(client, resources, "form_cluster"));
  	}
docs: <pre>
  Use this operation to form one node cluster from NetScaler Instance in bulk.
  </pre>