public Function<T, T2> get2() {
        return getAndCast(2);
    }
Constructs a {@link TupleMapper } that can create {@link Tuple20 }.

@param m0  mapper to apply for element 0
@param m1  mapper to apply for element 1
@param m2  mapper to apply for element 2
@param m3  mapper to apply for element 3
@param m4  mapper to apply for element 4
@param m5  mapper to apply for element 5
@param m6  mapper to apply for element 6
@param m7  mapper to apply for element 7
@param m8  mapper to apply for element 8
@param m9  mapper to apply for element 9
@param m10 mapper to apply for element 10
@param m11 mapper to apply for element 11
@param m12 mapper to apply for element 12
@param m13 mapper to apply for element 13
@param m14 mapper to apply for element 14
@param m15 mapper to apply for element 15
@param m16 mapper to apply for element 16
@param m17 mapper to apply for element 17
@param m18 mapper to apply for element 18
@param m19 mapper to apply for element 19
common-parent/tuple/src/main/java/com/speedment/common/tuple/internal/nonnullable/mapper/Tuple20MapperImpl.java