Creating a Custom Classification programmatically in Purview

### Type of issue

Missing information

### Description

I need to be able to manage (create, update, delete) custom classifications programmatically using `azure-purview` in Python. Is there a way to do so, and if there is, would anyone be able to show an example?
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### Page URL

https://learn.microsoft.com/en-us/python/api/azure-purview-datamap/azure.purview.datamap.models.atlastypesdef?view=azure-python-preview

### Content source URL

https://github.com/MicrosoftDocs/azure-docs-sdk-python/blob/main/preview/docs-ref-autogen/azure-purview-datamap/azure.purview.datamap.models.AtlasTypesDef.yml

### Document Version Independent Id

40cbc7e6-44a7-01a4-2ab8-71fd9810eb3b

### Article author

@VSC-Service-Account

### Metadata

* ID: 8bb30bd9-0909-99cb-23a9-9941ea4adadc