docs: def get_multifile_object_child_location(self, parent_location: str, child_name: str):
          """
          Implementation of the parent abstract method.
  
          In this mode the attribute is a file with the same prefix, separated from the parent object name by
          the character sequence <self.separator>
  
          :param parent_location: the absolute file prefix of the parent item.
          :param child_name:
          :return: the file prefix for this attribute
          """
          check_var(parent_location, var_types=str, var_name='parent_path')
          check_var(child_name, var_types=str, var_name='item_name')
  
          # a child location is built by adding the separator between the child name and the parent location
          return parent_location + self.separator + child_name