@Override
  @NotNull
  public String getDemoText() {
    return """
      # This comment starts with '#'
      greetings=Hello
      ! This comment starts with '!'
      what\\=to\\=greet : \\'W\\o\\rld\\',\\tUniverse\\n\\uXXXX
      """
      ;
  }
@Override
  @NotNull
  public String getDemoText()