Arbitrary error messages for SlevomatCodingStandard.PHP.ForbiddenClasses.forbiddenClasses

[TravisCarden]

I would like to use arbitrary error messages for SlevomatCodingStandard.PHP.ForbiddenClasses.forbiddenClasses, because I want to tell a developer what to do instead, but it's not necessarily a "fixable" alternative. For example, say I have a class \SomeClass. It has no alternative, it's just supposed to be instantiated via a factory, e.g., \SomeClassFactory::create(). If I try to provide that detail, it breaks the fixer, which creates invalid PHP.

No message

With no message, the error is confusing an un-actionable:

<element key="SomeClass" value="null"/>

# The problem:
new SomeClass('argument');

$ php vendor/bin/phpcs
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FOUND 1 ERROR AFFECTING 1 LINE
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 10 | ERROR | Usage of \SomeClass class is forbidden.
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Arbitrary message

But a helpful, arbitrary message confuses the fixer, which assumes the value is a valid class:

<element key="SomeClass" value="I'm trying to be helpful by recommending SomeClassFactory::create()"/>

# The problem:
new SomeClass('argument');

$ php vendor/bin/phpcs

--------------------------------------------------------------------------------------------------------------------------------------------
FOUND 1 ERROR AFFECTING 1 LINE
--------------------------------------------------------------------------------------------------------------------------------------------
 10 | ERROR | [x] Usage of \SomeClass class is forbidden, use \I'm trying to be helpful by recommending SomeClassFactory::create() instead.
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PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
--------------------------------------------------------------------------------------------------------------------------------------------

$ php vendor/bin/phpcbf
...

# "Fixed":
new I'm trying to be helpful by recommending SomeClassFactory::create()('argument');

Possible solution

If I could just disable the fixer for that one class element, that would solve the problem for me.