code: def rl_us(link=None):
      return T("US", link=link, details="UnsupervisedSampler")
  
imports: import abc
  import argparse
  import contextlib
  import difflib
  import enum
  import glob
  import itertools
  import json
  import nbformat
  import os.path
  import re
  import subprocess
  import sys
  import textwrap
label_desc: Use image node_id 4 for calling a global function with example usage: rl_us(link) and returns: T