NewFilterDiversionBucket return instance of FilterDiversionBucket.

ExperimentResult is the result match by ExperimentContext.

DiversionBucket is a interface by the bucket type to match diversion.

LayerParams offers Get* function to get value by the key If not found the key, defaultValue will return.

SceneParams offers Get* function to get value by the key If not found the key, defaultValue will return.