RemixIconEx.System.download_2

You're seeing just the function download_2, go back to RemixIconEx.System module for more information.
Link to this function

download_2(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.System.download_2()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M13 10h5l-6 6-6-6h5V3h2v7zm-9 9h16v-7h2v8a1 1 0 0 1-1 1H3a1 1 0 0 1-1-1v-8h2v7z" />
</svg>

example usage

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