code: def is_valid_superset(actual_projection, index):
      
      projection_type = actual_projection["ProjectionType"]
      if projection_type == "ALL":
          return True
      meta = index.model.Meta
      # all index types provide index keys and model keys
      provides = set.union(meta.keys, index.keys)
      if projection_type == "KEYS_ONLY":
          pass
      elif projection_type == "INCLUDE":  # pragma: no branch (unknown projections break loud)
          by_dynamo_name = {column.dynamo_name: column for column in meta.columns}
          provides.update(
              by_dynamo_name[name]
              for name in actual_projection["NonKeyAttributes"]
              if name in by_dynamo_name  # ignore columns the projection provides if the model doesn't care about them
          )
      else:
          logger.info(f"unexpected index ProjectionType '{projection_type}'")
          return False
      expects = index.projection["included"]
      return provides.issuperset(expects)
docs: Returns True if the actual index is a valid superset of the expected index