code: def test_variable_constructor(self):
      def fn():
          _ = variables.Variable()
  
      self.assert_trace_line_count(fn, count=15, filtering_enabled=True)
      self.assert_trace_line_count(
          fn, count=30, filtering_enabled=False
      )
  
file_path: tensorflow/tensorflow/python/util/traceback_utils_test.py
imports: import traceback
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import ops
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import test
  from tensorflow.python.util import traceback_utils
label_desc: Use image node_id 7 for calling the TracebackUtilsTest obj's underlying member method code with example usage: obj.test_variable_constructor() without return types