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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 copy(self):
 """ Make a copy of self and return. :return: A new ValueSet object. :rtype: ValueSet """


        vs = ValueSet(bits=self.bits)
        vs._regions = self._regions.copy()
        vs._region_base_addrs = self._region_base_addrs.copy()
        vs._reversed = self._reversed
        vs._si = self._si.copy()

        return vs