MonoLog Version 2 Issue with setFormatter() on NullHandler

[mranner]

Version 2 NullHandler does not accept setFormatter(), $handler must be instanceof Monolog\Handler\FormattableHandlerInterface

I placed $handler->setFormatter($formatter) in this conditions:

if (Logger::API === 1) { $handler->setFormatter($formatter); } elseif (Logger::API === 2 && $handler instanceof Monolog\Handler\FormattableHandlerInterface) { $handler->setFormatter($formatter); }