class_docstr: Wrapper around the profilers of Pytorch to provide a uniform
  interface, independent of the chosen implementation
code: def export_chrome_traces(self, folder: str, rank: int):
      file_name = f"profiler_chrome_trace_rank{rank}.json"
      file_path = os.path.abspath(os.path.join(folder, file_name))
      logging.info(f"Exporting profiling chrome traces to: {file_path}")
      self.profiler.export_chrome_trace(file_path)
  
imports: import functools
  import logging
  import os
  from contextlib import contextmanager
  from vissl.utils.layer_memory_tracking import null_context
label_desc: Use image node_id 7 for calling the Profiler obj's underlying member method code with example usage: obj.export_chrome_traces(folder, rank) without return types