code: def plugins(self):
          
  
          if self._plugins is None:
              self._plugins = {}
  
              for _, plugin in self.load_extensions('iotile.plugin'):
                  links = plugin()
                  for name, value in links:
                      self._plugins[name] = value
  
          return self._plugins
docs: Lazily load iotile plugins only on demand.
  
          This is a slow operation on computers with a slow FS and is rarely
          accessed information, so only compute it when it is actually asked
          for.