"Delete Asset" API call does not delete container

"Delete Asset" API call does not delete container

Hello,

I am trying the API for Asset deletion.
The reference includes the following statement:
When you delete an asset, the underlying storage container will be deleted too. You can control this behavior by assigning a DeletionPolicy to your asset.
I called the API for Asset deletion, but the container was not deleted.
Is this the wrong API or the wrong reference?
Also, how must DeletionPolicy be set?

Thank you,

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