Distinct between left- and right-mouse-button click in SectionTool.js

[indianscout]

The SectionTool binds "mouseclicked" event and recieves the x/y coords to display the section-control-utility.
When left-mouse-button is clicked:

Unfortunately it also displays the section-control-utility AND the context menu when right-mouse-button is clicked:

From a UX perspective this behaviour is not ideal. Either the section-control-utility OR the context menu should appear.
To achieve this it is necessary to distinct between these two different clicks like:

switch (event.which) {
        case 1:
            alert('Left Mouse button pressed.');
            break;
        case 2:
            alert('Middle Mouse button pressed.');
            break;
        case 3:
            alert('Right Mouse button pressed.');
            break;
        default:
            alert('You have a strange Mouse!');
    }

Unfortunately the "mouseclicked" event does not deliver the originating event to distinguish these cases (https://github.com/xeokit/xeokit-bim-viewer/blob/master/src/toolbar/SectionTool.js#L143).

_initSectionMode() {

        this.viewer.scene.input.on("mouseclicked", (coords) => {
            if (!this.getActive() || !this.getEnabled()) {
                return;
            }
            
            const pickResult = this.viewer.scene.pick({
                canvasPos: coords,
                pickSurface: true  // <<------ This causes picking to find the intersection point on the entity
            });

            if (pickResult) {

                const sectionPlane = this._sectionPlanesPlugin.createSectionPlane({
                    pos: pickResult.worldPos,
                    dir: math.mulVec3Scalar(pickResult.worldNormal, -1)
                });

                sectionPlane.on("destroyed", () => {
                    this._updateSectionPlanesCount();
                });

                this._sectionPlanesPlugin.showControl(sectionPlane.id);

                this._updateSectionPlanesCount();
            }
        });

Is there a way to distinct between left and right-mouse-button click in _initSectionMode()?

I suspect this probably needs to be changed in https://github.com/xeokit/xeokit-sdk...
Any suggestions are welcome.