isResolvable() {
        let resolvable = false;
        if (this.inp1.value !== this.prevInpValue) {
            if (this.inp1.value !== undefined) return true;
            return false;
        }
        let i;
        for (i = 0; i < this.splitCount; i++) { if (this.outputs[i].value === undefined) break; }
        if (i === this.splitCount) resolvable = true;
        return resolvable;
    }
@memberof Splitter
Checks if the element is resolvable
@return {boolean}