onComputedHeight(height) {
        if (this._lastHeight === undefined) {
            this._lastHeight = height;
        }
        else if (this._lastHeight !== height) {
            this._lastHeight = height;
            this._onHeight();
        }
    }
We want that this view zone, which reserves space for a code lens appears
as close as possible to the next line, so we use a very large value here.