code: def get_nested_schema_object(self, fully_qualified_parent_name: str,
                                   nested_item_name: str) -> Optional['BaseSchema']:
          
          return self.get_schema_object(
              self.get_fully_qualified_name(fully_qualified_parent_name, nested_item_name))
docs: Used to generate a schema object from the given fully_qualified_parent_name
          and the nested_item_name.
          :param fully_qualified_parent_name: The fully qualified name of the parent.
          :param nested_item_name: The nested item name.
          :return: An initialized schema object of the nested item.