code: def pytest_sessionstart(self):
      self.suite_start_time = time.time()
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import functools
  import os
  import platform
  import re
  import sys
  import time
  from datetime import datetime
  import py
  import six
  import pytest
  from _pytest import nodes
  from _pytest.config import filename_arg
label_desc: Use image node_id 10 for calling the LogXML obj's underlying member method code with example usage: obj.pytest_sessionstart() without return types