When\InvalidStartDate::__construct PHP Method

__construct() public method

public __construct ( $message = "The start date must be the first occurrence.", $code, Exception $previous = null )
$previous Exception
    public function __construct($message = "The start date must be the first occurrence.", $code = 0, Exception $previous = null)
    {
        parent::__construct($message, $code, $previous);
    }
InvalidStartDate