code: def _instructions_changed(self, change):
          
          if change.adds():
              for index, instruction in change.items():
                  if isinstance(instruction, dict):
                      in_row = self._parser.instruction_in_row(self, instruction)
                      self.instructions[index] = in_row
                  else:
                      instruction.transfer_to_row(self)
docs: Call when there is a change in the instructions.