get_node_path_portion
Description:
Get the last part of path
Parameters:
| this | a ServerOperation object | 
| path | a complete path to a node (starting with "/") | 
Returns:
| a new string, or  | 
Get the last part of path
| this | a ServerOperation object | 
| path | a complete path to a node (starting with "/") | 
| a new string, or  |