apply_filters( 'post_class', string[] $classes, string[] $css_class, int $post_id )

601	 * @since 2.7.0602	 *603	 * @param string[] $classes   An array of post class names.604	 * @param string[] $css_class An array of additional class names added to the post.605	 * @param int      $post_id   The post ID.606	 */607	$classes = apply_filters( 'post_class', $classes, $css_class, $post->ID );608 609	$classes = array_unique( $classes );610	$classes = array_values( $classes );611 612	return $classes;613}