https://tinkerpop.apache.org/javadocs/3.5.7/full/org/apache/tinkerpop/gremlin/structure/io/gryo/ToyIoRegistry.html
ToyIoRegistry (Apache TinkerPop 3.5.7 API)
apache tinkerpopapi
https://tinkerpop.apache.org/javadocs/3.5.7/full/org/apache/tinkerpop/gremlin/structure/io/gryo/ToyIoRegistry.ToyModule.html
ToyIoRegistry.ToyModule (Apache TinkerPop 3.5.7 API)
apache tinkerpopapi