code: def __init__(self):
      self.events = collections.OrderedDict()
      self.start_time = time.time()
  
file_path: catboost/library/python/import_tracing/lib/import_tracer.py
imports: import threading
  import time
  import collections
  import library.python.import_tracing.lib.event
  import library.python.import_tracing.lib.constants
label_desc: Use image node_id 1 to create a new ImportTracer object  with example: obj = ImportTracer()