def METHOD_NAME(self):
    """World coordinate system (`~astropy.wcs.WCS`)."""
    METHOD_NAME = WCS(naxis=2)
    METHOD_NAME.METHOD_NAME.crval = self.config['crval']
    METHOD_NAME.METHOD_NAME.crpix = self.config['crpix']
    METHOD_NAME.METHOD_NAME.cdelt = self.config['cdelt']
    METHOD_NAME.METHOD_NAME.ctype = self.config['ctype']
    return METHOD_NAME