apply_filters( 'wp_audio_shortcode_override', string $html, array $attr, string $content, int $instance )

3439	 *3440	 * @param string $html     Empty variable to be replaced with shortcode markup.3441	 * @param array  $attr     Attributes of the shortcode. See {@see wp_audio_shortcode()}.3442	 * @param string $content  Shortcode content.3443	 * @param int    $instance Unique numeric ID of this audio shortcode instance.3444	 */3445	$override = apply_filters( 'wp_audio_shortcode_override', '', $attr, $content, $instance );3446 3447	if ( '' !== $override ) {3448		return $override;3449	}3450 3451	$audio = null;