public static Properties producerConfig(final String bootstrapServers, final Class<?> keySerializer, final Class<?> valueSerializer) {
        return producerConfig(bootstrapServers, keySerializer, valueSerializer, 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