Method register_udaf

datafusion/execution/src/task.rs:212–221

(
        &mut self,
        udaf: Arc<AggregateUDF>,
    )

        })
    }
    fn register_udaf(
        &mut self,
        udaf: Arc<AggregateUDF>,
    ) -> Result<Option<Arc<AggregateUDF>>> {
        udaf.aliases().iter().for_each(|alias| {
            self.aggregate_functions
                .insert(alias.clone(), Arc::clone(&udaf));
        });
        Ok(self.aggregate_functions.insert(udaf.name().into(), udaf))
    }
    fn register_udwf(&mut self, udwf: Arc<WindowUDF>) -> Result<Option<Arc<WindowUDF>>> {
        udwf.aliases().iter().for_each(|alias| {
            self.window_functions