src/ConnectionManager.php
public static function getInstance(): ConnectionManager
	{
		if (self::$instance === NULL)
		{
			self::$instance = new self();
		}

		return self::$instance;
	}
public static function getInstance(): ConnectionManager
	{
		if (self::$instance === NULL)
		{
			self::$instance = new self();
		}

		return self::$instance;
	}
public static function getInstance ( ) : ConnectionManager { if ( self :: $ instance === NULL ) { self :: $ instance = new self ( ) ; } return self :: $ instance ; }
Return  a connection manager instance

@staticvar null $instance
@return ConnectionManager
Return a connection manager instance