Method with_higher_order_function

datafusion/sql/tests/common/mod.rs:102–111

(
        mut self,
        higher_order_function: Arc<HigherOrderUDF>,
    )

    }

    pub fn with_higher_order_function(
        mut self,
        higher_order_function: Arc<HigherOrderUDF>,
    ) -> Self {
        self.higher_order_functions.insert(
            higher_order_function.name().to_string(),
            higher_order_function,
        );
        self
    }
}

pub(crate) struct MockContextProvider {