class_docstr: Most tests done in the base class LinearOperatorDerivedClassTest.
  
  In this test, the operator is constructed with hints that invoke the use of
  a Cholesky decomposition for solves/determinant.
code: def test_tape_safe(self):
      matrix = variables_module.Variable([[2.0]])
      operator = linalg.LinearOperatorFullMatrix(
          matrix, is_self_adjoint=True, is_positive_definite=True
      )
      self.check_tape_safe(operator)
  
imports: import numpy
  from tensorflow.python.framework import config
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  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 8 for calling the SquareLinearOperatorFullMatrixSymmetricPositiveDefiniteTest obj's underlying member method code with example usage: obj.test_tape_safe() without return types