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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 validate(self):
 """Ensure the Fold block is valid."""

        if not isinstance(self.fold_scope_location, FoldScopeLocation):
            raise TypeError(u'Expected a FoldScopeLocation for fold_scope_location, got: {} '
                            u'{}'.format(type(self.fold_scope_location), self.fold_scope_location))