docs: def __root_path(self):
          """ Just checks the root path if set """
          if self.root_path is not None:
              if os.path.isdir(self.root_path):
                  sys.path.append(self.root_path)
                  return
              raise RuntimeError('EverNode requires a valid root path.'
                                 ' Directory: %s does not exist'
                                 % (self.root_path))