OptionsResolver::setNormalizer()

Sets the normalizer for an option.

The normalizer should be a closure with the following signature:

php function (Options $options, $value) { // ... }

The closure is invoked when {@link resolve()} is called. The closure has access to the resolved values of other options through the passed {@link Options} instance.

The second parameter passed to the closure is the value of the option.

The resolved option value is set to the return value of the closure.