docs: public BuiltinIntentMetadata withSupportedLocales(String... supportedLocales) {
          if (this.supportedLocales == null) {
              setSupportedLocales(new java.util.ArrayList<String>(supportedLocales.length));
          }
          for (String ele : supportedLocales) {
              this.supportedLocales.add(ele);
          }
          return this;
      }