code: def releaseNativeOverlayHandle(self, ulOverlayHandle, pNativeTextureHandle):
          
  
          fn = self.function_table.releaseNativeOverlayHandle
          result = fn(ulOverlayHandle, pNativeTextureHandle)
          return result
docs: Release the pNativeTextureHandle provided from the GetOverlayTexture call, this allows the system to free the underlying GPU resources for this object,
          so only do it once you stop rendering this texture.