code: def record_manifest():
      
      data = {}
      # Record settings.
      data['settings'] = dict(
          (k, v)
          for k, v in env.items()
          if not isinstance(v, types.GeneratorType) and k.strip() and not k.startswith('_') and not callable(v)
      )
      # Record tarball hash.
      # Record database migrations.
      # Record media hash.
      return data
docs: Called after a deployment to record any data necessary to detect changes
      for a future deployment.