code: 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;
      }
docs: <p>
  A list of features supported by the DB engine. Supported feature names include the following.
  </p>
  <ul>
  <li>
  <p>
  s3Import
  </p>
  </li>
  </ul>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setSupportedFeatureNames(java.util.Collection)} or
  {@link #withSupportedFeatureNames(java.util.Collection)} if you want to override the existing values.
  </p>
  
  @param supportedFeatureNames
  A list of features supported by the DB engine. Supported feature names include the following. </p>
  <ul>
  <li>
  <p>
  s3Import
  </p>
  </li>
  @return Returns a reference to this object so that method calls can be chained together.