A set of hyperparameters whose values have not been checked for validity. A reference to the
checked hyperparameters can only be obtained after checking has completed. If the
Transformer, Fit, or FitWith traits have been implemented on the checked
hyperparameters, they will also be implemented on the unchecked hyperparameters with the
checking step done automatically.
Implement this trait to opt into a blanket Transformer impl that wraps the output of the
unchecked transform call in a Result. If the unchecked transform call returns a Result,
the blanket impl will return double Results, so this trait should be avoided in that case.