Method get_function_meta

datafusion/sql/src/expr/mod.rs:1414–1416

(&self, _name: &str)

        }

        fn get_function_meta(&self, _name: &str) -> Option<Arc<ScalarUDF>> {
            None
        }

        fn get_higher_order_meta(&self, _name: &str) -> Option<Arc<HigherOrderUDF>> {
            None