code: def test_chrono_steady_clock_roundtrip():
      from pybind11_tests import test_chrono6
      import datetime
  
      time1 = datetime.timedelta(days=10, seconds=10, microseconds=100)
      time2 = test_chrono6(time1)
  
      assert isinstance(time2, datetime.timedelta)
  
      # They should be identical (no information lost on roundtrip)
      assert time1.days == time2.days
      assert time1.seconds == time2.seconds
      assert time1.microseconds == time2.microseconds
  
label_desc: Use image node_id 6 for calling a global function with example usage: test_chrono_steady_clock_roundtrip() without return types