code: def save(self, notes=None):
          '''Save all changes back to Redmine with optional notes.'''
          # Capture the notes if given
          if notes:
              self._changes['notes'] = notes
  
          # Call the base-class save function
          super(Issue, self).save(f save(self, notes=None):
          '''Save all changes back to Redmine with optional notes.'''
          # Capture the notes if given
          if notes:
              self._changes['notes'] = notes
  
          # Call the base-class save function
          super(Issue, self).save()
docs: Save all changes back to Redmine with optional notes.