code: def save(self):
          
          if self.path is None:  # Delete requested, so remove the current path from sys.path, if present
              if self.config_manager.userCodeDir is not None:
                  sys.path.remove(self.config_manager.userCodeDir)
                  self.config_manager.userCodeDir = None
                  logger.info("Removed custom module search path from configuration and sys.path.")
  
          else:
              if self.path != self.config_manager.userCodeDir:
                  if self.config_manager.userCodeDir is not None:
                      sys.path.remove(self.config_manager.userCodeDir)
                  sys.path.append(self.path)
                  self.config_manager.userCodeDir = self.path
                  logger.info("Saved custom module search path and added it to sys.path: {}".format(self.path))
docs: This function is called by the parent dialog window when the user selects to save the settings.