Namespace Org.Apache.Kafka.Common.Security.Plain.Internals Classes PlainSaslServer https://www.javadoc.io/doc/org.apache.kafka/kafka-clients/3.9.0/org/apache/kafka/common/security/plain/internals/PlainSaslServer.html PlainSaslServer.PlainSaslServerFactory https://www.javadoc.io/doc/org.apache.kafka/kafka-clients/3.9.0/org/apache/kafka/common/security/plain/internals/PlainSaslServer.PlainSaslServerFactory.html PlainSaslServerProvider https://www.javadoc.io/doc/org.apache.kafka/kafka-clients/3.9.0/org/apache/kafka/common/security/plain/internals/PlainSaslServerProvider.html PlainServerCallbackHandler https://www.javadoc.io/doc/org.apache.kafka/kafka-clients/3.9.0/org/apache/kafka/common/security/plain/internals/PlainServerCallbackHandler.html