RemixIconEx.Document.folder_history

You're seeing just the function folder_history, go back to RemixIconEx.Document module for more information.
Link to this function

folder_history(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.Document.folder_history()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M10.414 3l2 2H21c.552 0 1 .448 1 1v14c0 .552-.448 1-1 1H3c-.552 0-1-.448-1-1V4c0-.552.448-1 1-1h7.414zm-.828 2H4v14h16V7h-8.414l-2-2zM13 9v4h3v2h-5V9h2z" />
</svg>

example usage

svg.icon {
  width: 96;
  height: 96;
}