/**
 * Add a fallback image for files of the given mime type or type family.
 *
 * The fallback is used when there are no generated derivative images and one
 * is requested (for example, by a call to file_image()).
 *
 * @since 2.2
 * @package Omeka\Function\Plugin
 * @uses Omeka_View_Helper_FileMarkup::addFallbackImage()
 * @param string $mimeType The mime type this fallback is for, or the mime
 *  "prefix" it is for (video, audio, etc.)
 * @param string $image The name of the image to use, as would be passed to
 *  img()
 */
function add_file_fallback_image($mimeType, $image)
{
    Omeka_View_Helper_FileMarkup::addFallbackImage($mimeType, $image);
}