apply_filters( 'icon_dirs', string[] $uris )

7240			 * Filters the array of icon directory URIs.7241			 *7242			 * @since 2.5.07243			 *7244			 * @param string[] $uris Array of icon directory URIs keyed by directory absolute path.7245			 */7246			$dirs       = apply_filters( 'icon_dirs', array( $icon_dir => $icon_dir_uri ) );7247			$icon_files = array();7248			$all_icons  = array();7249			while ( $dirs ) {7250				$keys = array_keys( $dirs );7251				$dir  = array_shift( $keys );7252				$uri  = array_shift( $dirs );