wp_cache_ob_callback_filter filter-hookWPSCache 1.0

Usage

add_filter( 'wp_cache_ob_callback_filter', 'wp_kama_cache_ob_callback_filter' );

/**
 * Function for `wp_cache_ob_callback_filter` filter-hook.
 * 
 * @param  $buffer 
 *
 * @return 
 */
function wp_kama_cache_ob_callback_filter( $buffer ){

	// filter...
	return $buffer;
}
$buffer
-

Where the hook is called

wp_cache_ob_callback()
wp_cache_ob_callback_filter
wp-super-cache/wp-cache-phase2.php 2059
$buffer = apply_filters( 'wp_cache_ob_callback_filter', $buffer );

Where the hook is used in WP Super Cache

wp-super-cache/ossdl-cdn.php 227
add_filter( 'wp_cache_ob_callback_filter', 'scossdl_off_filter' );