AliAnalysisTaskDiJets *AddTaskDiJets()
{
// Creates a jet fider task, configures it and adds it to the analysis manager.

   // Get the pointer to the existing analysis manager via the static access method.
   //==============================================================================
   AliAnalysisManager *mgr = AliAnalysisManager::GetAnalysisManager();
   if (!mgr) {
      ::Error("AddTaskJets", "No analysis manager to connect to.");
      return NULL;
   }  
   
   // Check the analysis type using the event handlers connected to the analysis manager.
   //==============================================================================
   if (!mgr->GetInputEventHandler()) {
      ::Error("AddTaskDiJets", "This task requires an input event handler");
      return NULL;
   }

   // Create the task and configure it.
   //===========================================================================
   
   AliAnalysisTaskDiJets *dijetana = new AliAnalysisTaskDiJets("DiJetAnalysis");
   
   mgr->AddTask(dijetana);
      
   // Create ONLY the output containers for the data produced by the task.
   // Get and connect other common input/output containers via the manager as below
   //==============================================================================
   mgr->ConnectInput  (dijetana, 0, mgr->GetCommonInputContainer());
   mgr->ConnectOutput (dijetana, 0, mgr->GetCommonOutputContainer());
   
   return dijetana;
}