docs: public void completeTask() {
      assertTaskAssociated();
      processEngine.getTaskService().setVariablesLocal(getTask().getId(), getAndClearCachedLocalVariableMap());
      processEngine.getTaskService().setVariables(getTask().getId(), getAndClearCachedVariableMap());
      processEngine.getTaskService().complete(getTask().getId());
      associationManager.disAssociate();
    }