default ListTopicsResult listTopics() {
        return listTopics(new ListTopicsOptions());
    }
List the topics available in the cluster with the default options.
<p>
This is a convenience method for {@link #listTopics(ListTopicsOptions)} with default options.
See the overload for more details.

@return The ListTopicsResult.
clients/src/main/java/org/apache/kafka/clients/admin/Admin.java