ElasticSearch datasource doesn't offer sigv4 auth

I installed latest graphana 10.x and was using in built elastic search plugin.
As per documentation elastic search plugin setting page has items such as v4 auth but in my datasource page I can only see no auth/oidc/simple auth.

what I am wrong ?

I guess v4 means sigv4 auth. That must be enabled in the config first:

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