handlerService.activateHandler(ActionDefinitionIds.SHOW_OUTLINE, fOutlineHandler);
IHandler toggleCommentHandler = new ToggleLineCommentHandler();
handlerService.activateHandler(ActionDefinitionIds.TOGGLE_COMMENT, toggleCommentHandler);
IHandler addCommentBlockHandler = new AddBlockCommentHandler();
handlerService.activateHandler(ActionDefinitionIds.ADD_BLOCK_COMMENT, addCommentBlockHandler);
IHandler removeCommentBlockHandler = new RemoveBlockCommentHandler();
handlerService.activateHandler(ActionDefinitionIds.REMOVE_BLOCK_COMMENT, removeCommentBlockHandler);
}