@Override
  @NotNull
  public String getDemoText() {
    return
      """
        .. comment for documentation master file

        ===============
         Section Title
        ===============

        .. toctree::
           :maxdepth: 2

        There is *some italics text*
        and **bold one** and ``inline literals``

        A link_ in citation style.

        .. _link: http://www.google.com

        .. rubric:: Footnotes
        .. [*] footnote.
        .. [REL09] Citation

        :ref:`builders`


        ::

          Whitespace, newlines, blank lines, and
          all kinds of markup (like *this* or
          \\this) is preserved by literal blocks.

        It was literal block.""";
  }
@Override
  @NotNull
  public String getDemoText()