-- | Optional. Title for the expression, i.e. a short string describing its
-- purpose. This can be used e.g. in UIs which allow to enter the
-- expression.
eTitle :: Lens' Expr (Maybe Text)
eTitle = lens _eTitle (\ s a -> s{_eTitle = a})
eTitle :: Lens' Expr (Maybe Text)
eTitle = lens _eTitle (\ s a -> s{_eTitle = a})
eTitle = lens _eTitle (\ s a -> s{_eTitle = a})