pub trait SimpleFunctionExecutor: Send + Sync {
// Required method
fn evaluate<'life0, 'async_trait>(
&'life0 self,
args: Vec<Value>,
) -> Pin<Box<dyn Future<Output = Result<Value>> + Send + 'async_trait>>
where Self: 'async_trait,
'life0: 'async_trait;
// Provided methods
fn enable_cache(&self) -> bool { ... }
fn timeout(&self) -> Option<Duration> { ... }
}