const part001 = startSketchOn('XY')
    |> startProfileAt([0,0], %)
    |> line(end = [0, 10], tag = $thing)
    |> line(end = [10, 0])
    |> line(end = [0, -10], tag = $thing2)
    |> close()
    |> extrude(length = 10)
    |> fillet({radius: 2, tags: [thing, getOppositeEdge(thing)]}, %)
