shadows/framework/src/main/java/org/robolectric/shadows/ShadowTelephonyManager.java
@Implementation(minSdk = O)
  protected void setVoicemailVibrationEnabled(PhoneAccountHandle handle, boolean isEnabled) {
    voicemailVibrationEnabledMap.put(handle, isEnabled);
  }
@Implementation(minSdk = O)
  protected void setVoicemailVibrationEnabled(PhoneAccountHandle handle, boolean isEnabled) {
    voicemailVibrationEnabledMap.put(handle, isEnabled);
  }
Sets the value returned by {@link
TelephonyManager#isVoicemailVibrationEnabled(PhoneAccountHandle)}.