public @NotNull Builder addAdditionalClass(final @NotNull Class<?> clazz) {
            this.additionalClasses.add(clazz);
            return this;
        }
Adds an additional class to the .jar file of the {@link HiveMQExtension}.

@param clazz the additional class
@return the {@link Builder}
modules/hivemq/src/main/java/org/testcontainers/hivemq/HiveMQExtension.java