class_docstr: Test that we can capture a large amount of log messages with
  accurate timings
code: def split(self):
      self.arr = range(NUM_FOREACH)
  
      import random
      import string
  
      self.random_log_prefix = "".join(
          [random.choice(string.ascii_lowercase) for _ in range(5)]
      )
  
file_path: metaflow/test/core/tests/large_mflog.py
imports: from metaflow_test import MetaflowTest, ExpectationFailed, steps
label_desc: Use image node_id 1 for calling the LargeMflogTest obj's underlying member method code with example usage: obj.split() without return types