docs: def GetNodeStorageUnits(r, node, storage_type, output_fields):
      """
      Gets the storage units for a node.
  
      @type node: str
      @param node: the node whose storage units to return
      @type storage_type: str
      @param storage_type: storage type whose units to return
      @type output_fields: str
      @param output_fields: storage type fields to return
  
      @rtype: int
      @return: job id where results can be retrieved
      """
  
      query = {
          "storage_type": storage_type,
          "output_fields": output_fields,
      }
  
      return r.request("get", "/2/nodes/%s/storage" % node, query=query)