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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 unique(self):
 """Return unique values in the Series. Note that because it is hash-based, the result will NOT be in the same order (unlike pandas). Returns ------- LazyArrayResult Unique values in random order. """

        return LazyArrayResult(weld_unique(self.values,
                                           self.weld_type),
                               self.weld_type)