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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 get_pixbeam_pixel(self, x, y):
 """ Determine the beam in pixels at the given location in pixel coordinates. Parameters x , y : float The pixel coordinates at which the beam is determined. Returns ------- beam : :class:`AegeanTools.fits_image.Beam` A beam object, with a/b/pa in pixel coordinates. """

        ra, dec = self.pix2sky((x, y))
        return self.get_pixbeam(ra, dec)