code: def get_parameter(self, index):
          
          result = []
          for target in self.targets:
              if target is not None:
                  result.append(target.get_parameter(index))
  
          return result
docs: Gets the list of parameters at the specified index in the calling argument
          list for each of the module procedures in the interface.
  
          :arg index: the 0-based index of the parameter in the argument list.