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If no authorizer is configured, and the user attempts to list, add, or remove ACLs, SecurityDisabledException will be thrown.  Its error code will be 53.

Compatibility Plan

Since there are no existing ACL APIs and requests, backwards compatibility is not an issue.  However, we still need to think about forwards compatibility.  The version of the AdminClient that we release in 0.11 should be able to interact with future versions of the broker.

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