code: def free_norm(self, name, free=True, **kwargs):
          
          name = self.get_source_name(name)
          normPar = self.like.normPar(name).getName()
          self.free_source(name, pars=[normPar], free=free, **kwargs)
docs: Free/Fix normalization of a source.
  
          Parameters
          ----------
  
          name : str
              Source name.
  
          free : bool
              Choose whether to free (free=True) or fix (free=False).