locClassifyMeasuredIncludingGateExtension(pt) {
        let row = pt.y;
        if (row < 0 || row >= this.numWires) {
            return false;
        }
        let gate = this.columns[pt.x].gates[row];
        let h = gate === undefined ? 1 : gate.height;
        let r = (this.colIsMeasuredMask(pt.x) >> row) & ((1 << h) - 1);
        return r === 0 ? false : r === (1 << h) - 1 ? true : undefined;
    }
@param {!Point} pt
@returns {undefined|boolean}