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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 shift_to_origin(self, **kwargs):
 """ Shift a molecule to Origin. This function takes the molecule's coordinates and adjust them so that the centre of mass of the molecule coincides with the origin of the coordinate system. Returns ------- None : :class:`NoneType` """

        self.coordinates = shift_com(self.elements, self.coordinates, **kwargs)
        self._update()