measure the rendering time in vtk.js using "GetLastRenderTimeInSeconds()"

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1

I get an error when I used the following:

const lastRenderTime = renderWindow.GetLastRenderTimeInSeconds();
console.log(`Last Render Time: ${lastRenderTime} seconds`);
2

The property is on vtkRenderer, not vtkRenderWindow: renderer.getLastRenderTimeInSeconds().

3

Thank you for answering, but I get the following error:
TypeError: vtkRenderer.GetLastRenderTimeInSeconds is not a function

4

It gives me the same error