[vtkusers] How can I set the (0, 0, 0) position in the middle of my object using vtk.js?

[Georgiä NeverMind]

How can I set the (0,0,0) position in the middle of my object?
I have a STL file:

  reader.setUrl(`./data/object.stl`, { binary: true }).then(() => {
      mapper.setInputConnection(reader.getOutputPort());
      renderer.resetCamera();
});

But in the (0,0,0) there's NOT the center of my object, but the vertex of
the bounding box of it. How can I change it?
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