class_docstr: Most tests done in the base class LinearOperatorDerivedClassTest.
class_docstr_tok: ["Most","tests","done","in","the","base","class","LinearOperatorDerivedClassTest","."]
code: def test_tape_safe(self):
      tril = variables_module.Variable([[1.0, 0.0], [0.0, 1.0]])
      operator = linalg_lib.LinearOperatorLowerTriangular(
          tril, is_non_singular=True
      )
      self.check_tape_safe(operator)
  
imports: from tensorflow.python.framework import config
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import variables
  from tensorflow.python.ops.linalg import linalg
  from tensorflow.python.ops.linalg import linear_operator_test_util
  from tensorflow.python.platform import test
label_desc: Use image node_id 7 for calling the LinearOperatorLowerTriangularTest obj's underlying member method code with example usage: obj.test_tape_safe() without return types