internal static extern HmdMatrix34_t VR_IVRSystem_GetMatrix34TrackedDeviceProperty(IntPtr instancePtr, uint unDeviceIndex, TrackedDeviceProperty prop, ref TrackedPropertyError pError);

 internal static extern IntPtr VR_IVRSystem_GetPropErrorNameFromEnum(IntPtr instancePtr, TrackedPropertyError error);

 public abstract ulong GetUint64TrackedDeviceProperty(uint unDeviceIndex,TrackedDeviceProperty prop,ref TrackedPropertyError pError);

 internal static extern float VR_IVRSystem_GetFloatTrackedDeviceProperty(IntPtr instancePtr, uint unDeviceIndex, TrackedDeviceProperty prop, ref TrackedPropertyError pError);

 public abstract string GetPropErrorNameFromEnum(TrackedPropertyError error);

 public abstract uint GetStringTrackedDeviceProperty(uint unDeviceIndex,TrackedDeviceProperty prop,System.Text.StringBuilder pchValue,uint unBufferSize,ref TrackedPropertyError pError);

 public abstract int GetInt32TrackedDeviceProperty(uint unDeviceIndex,TrackedDeviceProperty prop,ref TrackedPropertyError pError);

 public override HmdMatrix34_t GetMatrix34TrackedDeviceProperty(uint unDeviceIndex,TrackedDeviceProperty prop,ref TrackedPropertyError pError)
 {
     CheckIfUsable();
     HmdMatrix34_t result = VRNativeEntrypoints.VR_IVRSystem_GetMatrix34TrackedDeviceProperty(m_pVRSystem,unDeviceIndex,prop,ref pError);
     return result;
 }

 public abstract bool GetBoolTrackedDeviceProperty(uint unDeviceIndex,TrackedDeviceProperty prop,ref TrackedPropertyError pError);

 public abstract float GetFloatTrackedDeviceProperty(uint unDeviceIndex,TrackedDeviceProperty prop,ref TrackedPropertyError pError);

 internal static extern uint VR_IVRSystem_GetStringTrackedDeviceProperty(IntPtr instancePtr, uint unDeviceIndex, TrackedDeviceProperty prop, System.Text.StringBuilder pchValue, uint unBufferSize, ref TrackedPropertyError pError);

 internal static extern ulong VR_IVRSystem_GetUint64TrackedDeviceProperty(IntPtr instancePtr, uint unDeviceIndex, TrackedDeviceProperty prop, ref TrackedPropertyError pError);

internal static extern int SteamAPI_vr_IVRSystem_GetInt32TrackedDeviceProperty(IntPtr instancePtr, TrackedDeviceIndex_t unDeviceIndex, TrackedDeviceProperty prop, ref TrackedPropertyError pError);