$instance $instance : \Bright\Sync\Singleton Type \Bright\Sync\Singleton — The reference to *Singleton* instance of this class
getInstance() getInstance() : \Bright\Sync\Singleton Returns the *Singleton* instance of this class. Returns \Bright\Sync\Singleton — The Singleton instance.
__construct() __construct() Protected constructor to prevent creating a new instance of the *Singleton* via the `new` operator from outside of this class.
__clone() __clone() : void Private clone method to prevent cloning of the instance of the *Singleton* instance.
__wakeup() __wakeup() : void Private unserialize method to prevent unserializing of the *Singleton* instance.