34     script_(), region_(), variant_(nullptr), extensions_(nullptr)  in LocaleBuilder()
44     delete extensions_;  in ~LocaleBuilder()
54     extensions_ = locale.clone();  in setLocale()
55     if (extensions_ == nullptr) {  in setLocale()
230     if (extensions_ == nullptr) {  in setExtension()
231         extensions_ = Locale::getRoot().clone();  in setExtension()
232         if (extensions_ == nullptr) {  in setExtension()
239         extensions_->setKeywordValue(StringPiece(&key, 1), value_str.data(),  in setExtension()
243     _clearUAttributesAndKeyType(*extensions_, status_);  in setExtension()
246         _setUnicodeExtensions(*extensions_, value_str, status_);  in setExtension()
261     if (extensions_ == nullptr) {  in setUnicodeLocaleKeyword()
262         extensions_ = Locale::getRoot().clone();  in setUnicodeLocaleKeyword()
263         if (extensions_ == nullptr) {  in setUnicodeLocaleKeyword()
268     extensions_->setUnicodeKeywordValue(key, type, status_);  in setUnicodeLocaleKeyword()
282     if (extensions_ == nullptr) {  in addUnicodeLocaleAttribute()
283         extensions_ = Locale::getRoot().clone();  in addUnicodeLocaleAttribute()
284         if (extensions_ == nullptr) {  in addUnicodeLocaleAttribute()
288         extensions_->setKeywordValue(kAttributeKey, value_str.data(), status_);  in addUnicodeLocaleAttribute()
295     extensions_->getKeywordValue(kAttributeKey, sink, localErrorCode);  in addUnicodeLocaleAttribute()
299         extensions_->setKeywordValue(kAttributeKey, new_attributes.data(), status_);  in addUnicodeLocaleAttribute()
331     extensions_->setKeywordValue(kAttributeKey, new_attributes.data(), status_);  in addUnicodeLocaleAttribute()
345     if (extensions_ == nullptr) { return *this; }  in removeUnicodeLocaleAttribute()
349     extensions_->getKeywordValue(kAttributeKey, sink, localErrorCode);  in removeUnicodeLocaleAttribute()
379         extensions_->setKeywordValue(kAttributeKey, new_attributes.data(), status_);  in removeUnicodeLocaleAttribute()
398     delete extensions_;  in clearExtensions()
399     extensions_ = nullptr;  in clearExtensions()
417     if (extensions_ == nullptr) {  in copyExtensionsFrom()
418         extensions_ = Locale::getRoot().clone();  in copyExtensionsFrom()
419         if (extensions_ == nullptr) {  in copyExtensionsFrom()
424     _copyExtensions(src, keywords.getAlias(), *extensions_, false, errorCode);  in copyExtensionsFrom()
450     if (extensions_ != nullptr) {  in build()
451         _copyExtensions(*extensions_, nullptr, product, true, errorCode);  in build()