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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 to_sky(self, wcs, origin=_DEFAULT_WCS_ORIGIN, mode=_DEFAULT_WCS_MODE):
 """Convert this `PixCoord` to `~astropy.coordinates.SkyCoord`. Calls :meth:`astropy.coordinates.SkyCoord.from_pixel`. See parameter description there. """

        return SkyCoord.from_pixel(
            xp=self.x, yp=self.y, wcs=wcs,
            origin=origin, mode=mode,
        )