public void FlatJsonSceneWrite()
{
var registry = new UTinyRegistry();
var entityGroup = registry.CreateEntityGroup(
UTinyId.New(),
"TestEntityGroup");
var entity = registry.CreateEntity(
UTinyId.New(),
"TestEntity");
entityGroup.AddEntityReference((UTinyEntity.Reference)entity);
var json = Serialization.FlatJson.BackEnd.Persist(entityGroup, entity);
Debug.Log(json);
}