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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def kwargs(self):
 """Returns a dict of the kwargs for this Struct which were not interpreted by the baseclass. This excludes fields like `extends`, `merges`, and `abstract`, which are consumed by SerializableFactory.create and Validatable.validate. """

    return {k: v for k, v in self._kwargs.items() if k not in self._INTERNAL_FIELDS}