extrudeFeatures.add should return null if the creation failed

[JeromeBriot]

Hello,

A simple code that obviously failed because the profile is "outside" the B-Rep body to cut:

#Author-
#Description-

import adsk.core, adsk.fusion, adsk.cam, traceback

def run(context):
    ui = None
    try:

        app = adsk.core.Application.get()
        ui  = app.userInterface
        design = adsk.fusion.Design.cast(app.activeProduct)

        rootComponent = design.rootComponent

        sketches = rootComponent.sketches
        sketchesPlane = rootComponent.xYConstructionPlane

        sketch1 = sketches.add(sketchesPlane)
        sketch1.name = 'Square'

        lines = sketch1.sketchCurves.sketchLines;

        lines.addTwoPointRectangle(adsk.core.Point3D.create(0, 0, 0), adsk.core.Point3D.create(2, 2, 0))

        sketch2 = sketches.add(sketchesPlane)
        sketch2.name = 'Hole'

        circles = sketch2.sketchCurves.sketchCircles

        circles.addByCenterRadius(adsk.core.Point3D.create(3, 1, 0), 0.5)

        extrudes = rootComponent.features.extrudeFeatures

        extrudeInput1 = extrudes.createInput(sketch1.profiles.item(0), adsk.fusion.FeatureOperations.NewBodyFeatureOperation)
        distance = adsk.core.ValueInput.createByReal(2.0)
        extrudeInput1.setSymmetricExtent(distance, True)
        extrude1 = extrudes.add(extrudeInput1)

        extrudeInput2 = extrudes.createInput(sketch2.profiles.item(0), adsk.fusion.FeatureOperations.CutFeatureOperation)
        extrudeInput2.participantBodies = [extrude1.bodies.item(0)]
        distance = adsk.core.ValueInput.createByReal(1.0)
        extrudeInput2.setSymmetricExtent(distance, True)
        extrude2 = extrudes.add(extrudeInput2)

        if extrude2 is None:
            ui.messageBox('Extrude Failed')

        sketch1.isVisible = True
        sketch2.isVisible = True

    except:
        if ui:
            ui.messageBox('Failed:\n{}'.format(traceback.format_exc()))

The documentation says that extrudes.add should return null but in fact, it returns an error: No target body found to cut or intersect!

More, the code runs with success when the line with participantBodies is uncommented.

The only workaround to the error message I found is:

        try:
            extrude = extrudes.add(extrudeInput)
        except:
            ui.messageBox('Extrude Failed')

According to the documentation, in both cases it should be:

        extrude = extrudes.add(extrudeInput)

        if extrude is None:
            ui.messageBox('Extrude Failed')

Thanks