vr-space-station/Assets/ThirdParty/VRTK/Source/SDK/Unity/SDK_UnityHeadsetTracker.cs

// Unity SDK Headset Tracker|SDK_Unity|006
namespace VRTK
{
    using UnityEngine;

    /// <summary>
    /// The Headset Tracker enables the GameObject to track it's position/rotation to the available connected VR HMD via the `UnityEngine.VR` library.
    /// </summary>
    /// <remarks>
    /// The Unity Headset Tracker is attached to the `[UnityBase_CameraRig]` prefab on the child `Head` HMD tracking.
    /// </remarks>
    public class SDK_UnityHeadsetTracker : MonoBehaviour
    {
    }
}