public Builder ioRegistry(final Object ioRegistryClassName) {
            this.ioRegistries.addAll(IoRegistryHelper.createRegistries(Collections.singletonList(ioRegistryClassName)));
            return this;
        }
The {@code IoRegistry} class name to use for the {@code GryoPool}

@param ioRegistryClassName a class name
@return the update builder
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/structure/io/gryo/GryoPool.java