docs: public DBEngineVersion withSupportedFeatureNames(String... supportedFeatureNames) {
          if (this.supportedFeatureNames == null) {
              setSupportedFeatureNames(new com.amazonaws.internal.SdkInternalList<String>(supportedFeatureNames.length));
          }
          for (String ele : supportedFeatureNames) {
              this.supportedFeatureNames.add(ele);
          }
          return this;
      }