docs: def from_str(cls: Type[BlockUIDType], blockid: str) -> BlockUIDType:
          """
          :param blockid: The block id
          """
          data = BlockUID.re_block_uid.match(blockid)
          if data is None:
              raise MalformedDocumentError("BlockUID")
          try:
              number = int(data.group(1))
          except AttributeError:
              raise MalformedDocumentError("BlockUID")
  
          try:
              sha_hash = data.group(2)
          except AttributeError:
              raise MalformedDocumentError("BlockHash")
  
          return cls(number, sha_hash)