public static NioEchoServer createEchoServer(ListenerName listenerName, SecurityProtocol securityProtocol,
                                                 AbstractConfig serverConfig, CredentialCache credentialCache, Time time) throws Exception {
        return createEchoServer(listenerName, securityProtocol, serverConfig, credentialCache, 100, time);
    }
Common utility functions used by transport layer and authenticator tests.
clients/src/test/java/org/apache/kafka/common/network/NetworkTestUtils.java