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If topic deletion feature is disabled , DeleteTopicsRequest will return TOPIC_DELETION_DISABLED  error code. 

public class TopicDeletionDisabledException extends ApiException {
    private static final long serialVersionUID = 1L;

    public TopicDeletionDisabledException() {
    }

    public TopicDeletionDisabledException(String message) {
        super(message);
    }
}

Proposed Changes

The proposal is to

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