code: def deserialize_block(value):
          
          # Block id strings are stored under batch/txn ids for reference.
          # Only Blocks, not ids or Nones, should be returned by _get_block.
          block = Block()
          block.ParseFromString(value)
          return BlockWrapper(
              block=block)
docs: Deserialize a byte string into a BlockWrapper
  
          Args:
              value (bytes): the byte string to deserialze
  
          Returns:
              BlockWrapper: a block wrapper instance