pub trait ContextMutatorFunction: Send + Sync {
// Required method
fn call<'a, 'life0, 'life1, 'life2, 'async_trait>(
&'life0 self,
context: &'life1 ExpressionEvaluationContext<'a>,
expression: &'life2 FunctionExpression,
) -> Pin<Box<dyn Future<Output = Result<ExpressionEvaluationContext<'a>, FunctionError>> + Send + 'async_trait>>
where Self: 'async_trait,
'a: 'async_trait,
'life0: 'async_trait,
'life1: 'async_trait,
'life2: 'async_trait;
}