RemixIconEx.Document.folders

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

folders(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.Document.folders()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M6 7V4a1 1 0 0 1 1-1h6.414l2 2H21a1 1 0 0 1 1 1v10a1 1 0 0 1-1 1h-3v3a1 1 0 0 1-1 1H3a1 1 0 0 1-1-1V8a1 1 0 0 1 1-1h3zm0 2H4v10h12v-2H6V9zm2-4v10h12V7h-5.414l-2-2H8z" />
</svg>

example usage

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