customSave() {
        const data = {
            constructorParamaters: [this.direction, this.bitWidth, this.outputBitWidth],
            nodes: {
                inpA: findNode(this.inpA),
                inpB: findNode(this.inpB),
                product: findNode(this.product),
            },
        };
        return data;
    }
@memberof verilogMultiplier
fn to create save Json Data of object
@return {JSON}