code: public DescribeOptionGroupsResult withOptionGroupsList(OptionGroup... optionGroupsList) {
          if (this.optionGroupsList == null) {
              setOptionGroupsList(new com.amazonaws.internal.SdkInternalList<OptionGroup>(optionGroupsList.length));
          }
          for (OptionGroup ele : optionGroupsList) {
              this.optionGroupsList.add(ele);
          }
          return this;
      }
docs: <p>
  List of option groups.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setOptionGroupsList(java.util.Collection)} or {@link #withOptionGroupsList(java.util.Collection)} if you
  want to override the existing values.
  </p>
  
  @param optionGroupsList
  List of option groups.
  @return Returns a reference to this object so that method calls can be chained together.