RemixIconEx.System.upload_cloud

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

upload_cloud(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.System.upload_cloud()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M1 14.5a6.496 6.496 0 0 1 3.064-5.519 8.001 8.001 0 0 1 15.872 0 6.5 6.5 0 0 1-2.936 12L7 21c-3.356-.274-6-3.078-6-6.5zm15.848 4.487a4.5 4.5 0 0 0 2.03-8.309l-.807-.503-.12-.942a6.001 6.001 0 0 0-11.903 0l-.12.942-.805.503a4.5 4.5 0 0 0 2.029 8.309l.173.013h9.35l.173-.013zM13 13v4h-2v-4H8l4-5 4 5h-3z" />
</svg>

example usage

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