code: def _unnest(self, *args, **kwargs):
      return test_utils.strict_run_resolver_op(
          ops.Unnest, args=args, kwargs=kwargs
      )
  
file_path: tfx/tfx/dsl/input_resolution/ops/unnest_op_test.py
imports: import tensorflow
  from tfx.dsl.input_resolution import resolver_function
  from tfx.dsl.input_resolution import resolver_op
  from tfx.dsl.input_resolution.ops import ops
  from tfx.dsl.input_resolution.ops import test_utils
  from tfx.orchestration.portable.input_resolution import exceptions
label_desc: Use image node_id 2 for calling the UnnestOpTest obj's underlying member method code with example usage: obj._unnest() and returns: test_utils