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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 load_fitsbuf(self, imname, fitsbuf, num_hdu):
 """Display a FITS file buffer in a remote Ginga reference viewer. Parameters imname : str A name to use for the image in the reference viewer. chname : str Name of a channel in which to load the image. fitsbuf : str This should be a valid FITS file, read in as a complete buffer. num_hdu : int or 2-tuple Number or key of the HDU to open from the buffer. Returns ------- 0 Notes ----- * The "RC" plugin needs to be started in the viewer for this to work. """

        load_fits_buffer = self._client_.lookup_attr('load_fits_buffer')

        return load_fits_buffer(imname, self._chname,
                                Blob(fitsbuf),
                                num_hdu, {})