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

3408	 *3409	 * @param string $html     Empty variable to be replaced with shortcode markup.3410	 * @param array  $attr     Attributes of the shortcode. See {@see wp_audio_shortcode()}.3411	 * @param string $content  Shortcode content.3412	 * @param int    $instance Unique numeric ID of this audio shortcode instance.3413	 */3414	$override = apply_filters( 'wp_audio_shortcode_override', '', $attr, $content, $instance );3415 3416	if ( '' !== $override ) {3417		return $override;3418	}3419 3420	$audio = null;