get_outputs() in StepRun is not accessible

I was exploring the sample - https://github.com/Azure/MachineLearningNotebooks/blob/master/how-to-use-azureml/machine-learning-pipelines/intro-to-pipelines/aml-pipelines-with-data-dependency-steps.ipynb.

I never managed to get the last but first code section running

```
# Get Steps
for step in pipeline_run1.get_steps():
print("Outputs of step " + step.name)

# Get a dictionary of StepRunOutputs with the output name as the key
output_dict = step.get_outputs()

for name, output in output_dict.items():

output_reference = output.get_port_data_reference() # Get output port data reference
print("\tname: " + name)
print("\tdatastore: " + output_reference.datastore_name)
print("\tpath on datastore: " + output_reference.path_on_datastore)
```

Error is like get_outputs() is not a method definition available. I tried in AML CI notebook with Kernel as: Python 3.8 - AzureML. I am not sure what I am missing. Could someone please help me unblock?