code: def add(node_name, **kwargs):
      
      result = {}
      kwargs = kwargs.copy()
      overwrite = kwargs.pop('overwrite', False)
      node = nago.core.get_node(node_name)
      if not node:
          node = nago.core.Node()
      elif not overwrite:
          result['status'] = 'error'
          result['message'] = "node %s already exists. add argument overwrite=1 to overwrite it." % (node_name)
          return result
      else:
          node.delete()
          node = nago.core.Node()
      node['host_name'] = node_name
      for k, v in kwargs.items():
          node[k] = v
      node.save()
      result['message'] = "node successfully saved"
      result['node_data'] = node.data
      return result
docs: Create a new node and generate a token for it