code: def get_src_address_from_data(self, decoded=True):
          
          src_address_label = next((lbl for lbl in self.message_type if lbl.field_type
                                    and lbl.field_type.function == FieldType.Function.SRC_ADDRESS), None)
          if src_address_label:
              start, end = self.get_label_range(src_address_label, view=1, decode=decoded)
              if decoded:
                  src_address = self.decoded_hex_str[start:end]
              else:
                  src_address = self.plain_hex_str[start:end]
          else:
              src_address = None
  
          return src_address
docs: Return the SRC address of a message if SRC_ADDRESS label is present in message type of the message
          Return None otherwise
  
          :param decoded:
          :return: