Method is_async

crates/rust/src/lib.rs:1052–1062

(
        &mut self,
        resolve: &Resolve,
        interface: Option<&WorldKey>,
        func: &Function,
        is_import: bool,
    )

    }

    fn is_async(
        &mut self,
        resolve: &Resolve,
        interface: Option<&WorldKey>,
        func: &Function,
        is_import: bool,
    ) -> bool {
        self.opts
            .async_
            .is_async(resolve, interface, func, is_import)
    }

    fn should_return_self(&self, func: &Function) -> bool {
        self.opts.enable_method_chaining