def count(self, files=False):
        """ Returns a count of unique values or files.

        Args:
            files (bool): When True, counts all files mapped to the Entity.
                When False, counts all unique values.
        Returns: an int.
        """
        return len(self.files) if files else len(self.unique())
Returns a count of unique values or files.

        Args:
            files (bool): When True, counts all files mapped to the Entity.
                When False, counts all unique values.
        Returns: an int.