This version of Unity is unsupported.
Method group is Obsolete

HolographicSettings.ReprojectionMode

Obsolete Support for built-in VR will be removed in Unity 2020.1. Please update to the new Unity XR Plugin System. More information about the new XR Plugin System can be found at https://docs.unity3d.com/2019.3/Documentation/Manual/XR.html. public static XR.WSA.HolographicSettings.HolographicReprojectionMode ReprojectionMode;

Description

The kind of reprojection the app is requesting to stabilize its holographic rendering relative to the user's head motion.