new_contents: # -*- coding: utf-8 -*-
  from __future__ import unicode_literals
  
  
  import warnings
  
  from glitter.blockadmin.blocks import BlockAdmin, site
  
  from .models import BaseBlock  # noqa
  
  
  BlockModelAdmin = BlockAdmin
  
  __all__ = ['site', 'BlockModelAdmin']
  
  
  warnings.warn(
      "BlockModelAdmin has been moved to blockadmin.blocks.BlockAdmin",
      DeprecationWarning,
      stacklevel=2
  )
  
subject: Add deprecation warning and backward compatibility