What is the status of NotebookRunnerStep?

[This question came up on SO](https://stackoverflow.com/questions/63866007/trigger-jupyter-notebook-in-azure-ml-workspace-from-adf/63878663#63878663​​​​​​​), and it made me think of `NotebookRunnerStep`. the SDK docs make no mention of `NotebookRunnerStep` but there is a demo notebook in this repo. Is that because the feature is still in public preview? If so, what's the roadmap to GA or inclusion in the main SDK (at least the docs?).

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#### Document Details

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* ID: 2cf9e3d1-b313-c997-eae8-6cab3bd2014a
* Version Independent ID: 0ef18191-46b9-6da0-0951-627a442c7d5e
* Content: [azureml.pipeline.steps package - Azure Machine Learning Python](https://docs.microsoft.com/en-us/python/api/azureml-pipeline-steps/azureml.pipeline.steps?view=azure-ml-py)
* Content Source: [AzureML-Docset/stable/docs-ref-autogen/azureml-pipeline-steps/azureml.pipeline.steps.yml](https://github.com/MicrosoftDocs/MachineLearning-Python-pr/blob/live/AzureML-Docset/stable/docs-ref-autogen/azureml-pipeline-steps/azureml.pipeline.steps.yml)
* Service: **machine-learning**
* Sub-service: **core**
* GitHub Login: @debfro
* Microsoft Alias: **debfro**

Beginne mit dem NotebookRunnerStep-Demo-Notebook und der in der Issue verlinkten Referenzseite zu azureml.pipeline.steps, einschließlich AzureML-Docset/stable/docs-ref-autogen/azureml.pipeline.steps.yml. Vergleiche die dokumentierte SDK-Oberfläche mit der Demo und der verlinkten Stack Overflow-Frage; als erledigt gilt die Recherche, wenn der Preview-Status, die Roadmap sowie die Entscheidung zur Dokumentation oder Aufnahme des Features eindeutig geklärt sind.

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