code: def reload_source(self, name, init_source=True):
          
  
          for c in self.components:
              c.reload_source(name)
  
          if init_source:
              self._init_source(name)
  
          self.like.model = self.like.components[0].model
docs: Delete and reload a source in the model.  This will update
          the spatial model of this source to the one defined in the XML
          model.