NullSeparatorCommandOnTask<TaskElement> separator = new NullSeparatorCommandOnTask<TaskElement>();
final IResourceAllocationCommand resourceAllocationCommand = buildResourceAllocationCommand(editTaskController);
final IAdvanceAssignmentPlanningCommand advanceAssignmentPlanningCommand = buildAdvanceAssignmentPlanningCommand(advanceAssignmentPlanningController);
// Build context menu
configuration.addCommandOnTask(buildMilestoneCommand());
configuration.addCommandOnTask(buildDeleteMilestoneCommand());
configuration.addCommandOnTask(separator);