Method expressions

datafusion/optimizer/src/push_down_limit.rs:334–339

(&self)

        }

        fn expressions(&self) -> Vec<Expr> {
            self.input
                .iter()
                .flat_map(|child| child.expressions())
                .collect()
        }

        fn fmt_for_explain(&self, f: &mut Formatter) -> std::fmt::Result {
            write!(f, "NoopPlan")