RemixIconEx.Document.file_list_3

You're seeing just the function file_list_3, go back to RemixIconEx.Document module for more information.
Link to this function

file_list_3(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.Document.file_list_3()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M19 22H5a3 3 0 0 1-3-3V3a1 1 0 0 1 1-1h14a1 1 0 0 1 1 1v12h4v4a3 3 0 0 1-3 3zm-1-5v2a1 1 0 0 0 2 0v-2h-2zm-2 3V4H4v15a1 1 0 0 0 1 1h11zM6 7h8v2H6V7zm0 4h8v2H6v-2zm0 4h5v2H6v-2z" />
</svg>

example usage

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