public void addEmulators(List<AndroidEmulator> emulators) throws AndroidDeviceException {
    if (emulators == null || emulators.isEmpty()) {
      log.info("No emulators has been found.");
      return;
    }
    for (AndroidEmulator emulator : emulators) {
      log.info("Adding: " + emulator);
      addDeviceToStore((AndroidDevice) emulator);
    }
  }
After a test session a device should be released. That means id will be removed from the list
of devices in use and in case of an emulator it will be stopped.

@param device The device to release
@see {@link #findAndroidDevice(SelendroidCapabilities)}
selendroid-standalone/src/main/java/io/selendroid/standalone/server/model/DeviceStore.java