@Override
    public M getF2() {
        return f2;
    }
Create a new quartet instance.

@param f1 the f1 value, may be null
@param f2 the f2 value, may be null
@param f3 the f3 value, may be null
inlong-manager/manager-common/src/main/java/org/apache/inlong/manager/common/tool/excel/tuple/ImmutableQuartet.java