@KeyboardExtension.KeyboardExtensionType
  public int getExtensionType() {
    return mExtensionType;
  }
@Test
  public void testGetCurrentKeyboardExtensionBottomDefault() throws Exception {
    KeyboardExtension extension =
        AnyApplication.getBottomRowFactory(getApplicationContext()).getEnabledAddOn();
    Assert.assertNotNull(extension);
    Assert.assertEquals("09f8f280-dee2-11e0-9572-0800200c9a66", extension.getId());
    Assert.assertEquals(KeyboardExtension.TYPE_BOTTOM, extension.getExtensionType());
    Assert.assertEquals(R.xml.ext_kbd_bottom_row_regular_with_voice, extension.getKeyboardResId());
  }