apply_filters( 'site_allowed_themes', string[] $allowed_themes, int $blog_id )

1723			 *1724			 * @since 4.5.01725			 *1726			 * @param string[] $allowed_themes An array of theme stylesheet names.1727			 * @param int      $blog_id        ID of the site. Defaults to current site.1728			 */1729			return (array) apply_filters( 'site_allowed_themes', $allowed_themes[ $blog_id ], $blog_id );1730		}1731 1732		$current = get_current_blog_id() === $blog_id;1733 1734		if ( $current ) {1735			$allowed_themes[ $blog_id ] = get_option( 'allowedthemes' );