code: def add_comment(self, comment, metadata=""):
          
          data = {
              'comment': comment,
              'metadata': metadata
          }
  
          return self.post('createComment', data)
docs: Add a canned comment
  
          :type comment: str
          :param comment: New canned comment
  
          :type metadata: str
          :param metadata: Optional metadata
  
          :rtype: dict
          :return: A dictionnary containing canned comment description