code: public DBEngineVersion withSupportedCharacterSets(CharacterSet... supportedCharacterSets) {
          if (this.supportedCharacterSets == null) {
              setSupportedCharacterSets(new java.util.ArrayList<CharacterSet>(supportedCharacterSets.length));
          }
          for (CharacterSet ele : supportedCharacterSets) {
              this.supportedCharacterSets.add(ele);
          }
          return this;
      }
docs: <p>
  A list of the character sets supported by this engine for the <code>CharacterSetName</code> parameter of the
  <code>CreateDBInstance</code> action.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setSupportedCharacterSets(java.util.Collection)} or
  {@link #withSupportedCharacterSets(java.util.Collection)} if you want to override the existing values.
  </p>
  
  @param supportedCharacterSets
  A list of the character sets supported by this engine for the <code>CharacterSetName</code> parameter of
  the <code>CreateDBInstance</code> action.
  @return Returns a reference to this object so that method calls can be chained together.