code: def _check_common_tlv_format(self, tlv_complete_data, tlv_data_pattern,
                                   tlv_string):
          
          if tlv_complete_data is None:
              return False, None
          tlv_string_split = tlv_complete_data.split(tlv_string)
          if len(tlv_string_split) < 2:
              return False, None
          next_tlv_list = tlv_string_split[1].split('TLV')[0]
          tlv_val_set = next_tlv_list.split(tlv_data_pattern)
          if len(tlv_val_set) < 2:
              return False, None
          return True, tlv_val_set
docs: Check for the common TLV format.