python api missing bpy.types.Cycles* In 2.81 python api the bpy.types.Cycles* classes are omitted from docs but mostly still accessible ?

Can they be found elsewhere in the docs ?
Till there is no changes you can use API reference form 2.80, for example CyclesRenderSettings

Source of Cycles types contains in Blender_installation_path\2.8*\scripts\addons\cycles\properties.py, you can use it as reference simultaneously.