code: def parameters(self):
          
          all_parameters = collections.OrderedDict()
  
          for component in self._components.values():
  
              for par in component.shape.parameters.values():
  
                  all_parameters[par.path] = par
  
          for par in self.position.parameters.values():
  
              all_parameters[par.path] = par
  
          return all_parameters
docs: Returns a dictionary of all parameters for this source.
          We use the parameter path as the key because it's 
          guaranteed to be unique, unlike the parameter name.
  
          :return: