instance static method
Implementation
static Future<LanguageTools> instance() async {
if( _isGetCacheBefore == false ) {
_isGetCacheBefore = true;
isCacheArabic = await _getCacheIsArabic( );
// Log.i("LanguageTools - instance() - isCacheArabic: " + isCacheArabic.toString() );
}
return LanguageTools._();
}