public static Properties consumerConfig(final String bootstrapServers,
                                            final String groupId,
                                            final Class<?> keyDeserializer,
                                            final Class<?> valueDeserializer) {
        return consumerConfig(bootstrapServers,
            groupId,
            keyDeserializer,
            valueDeserializer,
            new Properties());
    }
Create a temporary relative directory in the specified parent directory with the given prefix.

@param parent The parent folder path name, if null using the default temporary-file directory
@param prefix The prefix of the temporary directory, if null using "kafka-" as default prefix
clients/src/test/java/org/apache/kafka/test/TestUtils.java