list function returns a generator object

Hi, I tried to run the Run.list.
However, I only get a generator object instead of list back as follow:

Run.list(experiment = exp, include_children=True, _rehydrate_runs=False)
>> return . at 0x7fe5f0fe9ba0>

Run.list(exp)
>> return

Could you please help with checking this? Thanks!

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#### Document Details

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* ID: 9a70336d-fb4a-4c18-26d0-68784b5b3d72
* Version Independent ID: e28876d8-08a0-8546-4bd1-6e434c8c7826
* Content: [azureml.core.Run class - Azure Machine Learning Python](https://docs.microsoft.com/en-us/python/api/azureml-core/azureml.core.run(class)?view=azure-ml-py)
* Content Source: [AzureML-Docset/stable/docs-ref-autogen/azureml-core/azureml.core.Run(class).yml](https://github.com/MicrosoftDocs/MachineLearning-Python-pr/blob/live/AzureML-Docset/stable/docs-ref-autogen/azureml-core/azureml.core.Run(class).yml)
* Service: **machine-learning**
* Sub-service: **core**
* GitHub Login: @DebFro
* Microsoft Alias: **debfro**

Start by reproducing the Run.list calls from the issue and inspect the linked azureml.core.Run documentation source at AzureML-Docset/stable/docs-ref-autogen/azureml-core/azureml.core.Run(class).yml. Determine whether the documented return type matches the observed generator behavior; done means the behavior or documentation is clarified and the relevant source is updated if needed.

Escrita pelo modelo de indexação a partir do texto da issue.