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);
}
fShowPropertiesAction = new ShowPropertiesAction(getEditorPart(), getSelectionProvider());
fFoldingGroup = new FoldingActionGroup(this, getSourceViewer());