code: def add_note(self, content):
          
          args = {
              'project_id': self.id,
              'content': content
          }
          _perform_command(self.owner, 'note_add', args)
docs: Add a note to the project.
  
          .. warning:: Requires Todoist premium.
  
          :param content: The note content.
          :type content: str
  
          >>> from pytodoist import todoist
          >>> user = todoist.login('john.doe@gmail.com', 'password')
          >>> project = user.get_project('PyTodoist')
          >>> project.add_note('Remember to update to the latest version.')