docs: def load_mode(node):
      """Load one observing mdode"""
      obs_mode = ObservingMode()
      obs_mode.__dict__.update(node)
  
      # handle validator
      load_mode_validator(obs_mode, node)
  
      # handle builder
      load_mode_builder(obs_mode, node)
  
      # handle tagger:
      load_mode_tagger(obs_mode, node)
  
      return obs_mode