code: def get_long_str(approx_len: int) -> str:
      block = "12345678223456783234567842345678\n"
      s = io.StringIO()
  
      i = 0
      while i < approx_len:
          s.write(block)
          i += len(block)
      return s.getvalue()
  
file_path: determined/harness/tests/checkpoints/test_checkpoint.py
imports: import io
  import tarfile
  from pathlib import Path
  import responses
  from responses import matchers
  from determined.common import api
  from determined.common.experimental import Checkpoint
label_desc: Use image node_id 1 for calling a global function with example usage: get_long_str(approx_len) and returns: s