poll

    pub fn poll(self: *ManagedNetwork) PollError!void {
        switch (self._poll(self)) {
            .success => {},
            .not_started => return error.NotStarted,
            .device_error => return error.DeviceError,
            .not_ready => return error.NotReady,
            .timeout => return error.Timeout,
            else => |status| return uefi.unexpectedStatus(status),
        }
    }