private static String bootstrapServers(Map<String, Object> adminConfig) {
        Object result = adminConfig.get(AdminClientConfig.BOOTSTRAP_SERVERS_CONFIG);
        return result != null ? result.toString() : null;
    }
Create a new topic admin component with the given configuration.
<p>
Note that this will create an underlying {@link Admin} instance which must be freed when this
topic admin is no longer needed by calling {@link #close()} or {@link #close(Duration)}.

@param adminConfig the configuration for the {@link Admin}
connect/runtime/src/main/java/org/apache/kafka/connect/util/TopicAdmin.java