code: def float_types(self):
      return set(super(CholeskyOpTest, self).float_types).intersection(
          (np.float64, np.float32, np.complex64, np.complex128)
      )
  
imports: import numpy
  from tensorflow.compiler.tests import xla_test
  from tensorflow.python.framework import constant_op
  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 linalg_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 1 for calling the CholeskyOpTest obj's underlying member method code with example usage: obj.float_types() and returns: set