original_string: protected static function getFromCache($identifier, $fallback)
      {
          if (! array_key_exists($identifier, static::$configFilesCache)) {
              static::$configFilesCache[$identifier] = is_callable($fallback)
                  ? $fallback($identifier)
                  : $fallback;
          }
  
          return static::$configFilesCache[$identifier];
      }
code: protected static function getFromCache($identifier, $fallback)
      {
          if (! array_key_exists($identifier, static::$configFilesCache)) {
              static::$configFilesCache[$identifier] = is_callable($fallback)
                  ? $fallback($identifier)
                  : $fallback;
          }
  
          return static::$configFilesCache[$identifier];
      }
code_tokens: protected static function getFromCache ( $ identifier , $ fallback ) { if ( ! array_key_exists ( $ identifier , static :: $ configFilesCache ) ) { static :: $ configFilesCache [ $ identifier ] = is_callable ( $ fallback ) ? $ fallback ( $ identifier ) : $ fallback ; } return static :: $ configFilesCache [ $ identifier ] ; }
docstring: Get a config file from the config file cache.
  
  @since 0.4.4
  
  @param string $identifier Identifier to look for in the cache.
  @param mixed  $fallback   Fallback to use to fill the cache. If $fallback is a callable, it will be executed
  with $identifier as an argument.
  
  @return mixed The latest content of the cache for the given identifier.
docstring_tokens: Get a config file from the config file cache .