interface FirstElement {
      id: string;
      type: GenericElementType;
      options: FirstElementOptions;
    }

   interface SecondElement {
      id: string;
      type: GenericElementType;
      options: SecondElementOptions;
    }

private static convertElementToDTO(element: FirstElement | SecondElement): FirstElementDTO | SecondElementDTO {
    return {
      id: element.id,
      options: element.options
    };
  }