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A typical configuration via code comment looks like this:

  :reek:DuplicateMethodCall { enabled: false }

There are a lot of ways a user can introduce some errors here:

1.) Unknown smell detector
2.) Garbage in the detector configuration like { thats: a: bad: config }
3.) Unknown configuration keys (e.g. by doing a simple typo: "exclude" vs. "exlude" )
4.) Bad data types given as values for those keys
This class validates [1], [2] and [3] at the moment but will also validate
[4] in the future.

:reek:TooManyInstanceVariables: { max_instance_variables: 7 }
No suggestions.
Please help! Open an issue on GitHub if this assessment is incorrect.