code: @Override
    public void createIdentityLinkComment(String taskId, String userId, String groupId, String type, boolean create) {
      createIdentityLinkComment(taskId, userId, groupId, type, create, false);
    }
docs: /*
  (non-Javadoc)
  
  @see org.activiti.engine.impl.history.HistoryManagerInterface# createIdentityLinkComment(java.lang.String, java.lang.String, java.lang.String, java.lang.String, boolean)