code: def definitions_errors(self):
          
          if not self.is_logic_error:
              return None
  
          result = defaultdict(list)
          for error in self.child_errors:
              i = error.schema_path[len(self.schema_path)]
              result[i].append(error)
          return result
docs: Dictionary with errors of an *of-rule mapped to the index of the
              definition it occurred in. Returns :obj:`None` if not applicable.