@Implementation(minSdk = N)
  protected Uri getVoicemailRingtoneUri(PhoneAccountHandle handle) {
    return voicemailRingtoneUriMap.get(handle);
  }
@Implementation(minSdk = N)
  protected Uri getVoicemailRingtoneUri(PhoneAccountHandle handle) {
    return voicemailRingtoneUriMap.get(handle);
  }
@ Implementation ( minSdk = N ) protected Uri getVoicemailRingtoneUri ( PhoneAccountHandle handle ) { return voicemailRingtoneUriMap . get ( handle ) ; }
Returns {@code null} by default or the value specified via {@link
#setVoicemailRingtoneUri(PhoneAccountHandle, Uri)}.
Returns {