code: def save(self):
          
          is_changed = False
          for prop in self._instance.CONFIG_PARAMS:
              if getattr(self, prop) != getattr(self._instance, prop):
                  is_changed = True
                  setattr(self._instance, prop, getattr(self, prop))
          if is_changed:
              self._instance.save_configuration()
docs: Method that saves configuration parameter changes from instance of SHConfig class to global config class and
          to `config.json` file.
  
          Example of use case
              ``my_config = SHConfig()`` \n
              ``my_config.instance_id = '<new instance id>'`` \n
              ``my_config.save()``