public static <T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20> MutableTuple21<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20> create21() {
        return new MutableTuple21Impl<>();
    }
Creates and returns a new {@link MutableTuple21}  that is empty.

@param <T0>  type of element 0
@param <T1>  type of element 1
@param <T2>  type of element 2
@param <T3>  type of element 3
@param <T4>  type of element 4
@param <T5>  type of element 5
@param <T6>  type of element 6
@param <T7>  type of element 7
@param <T8>  type of element 8
@param <T9>  type of element 9
@param <T10> type of element 10
@param <T11> type of element 11
@param <T12> type of element 12
@param <T13> type of element 13
@param <T14> type of element 14
@param <T15> type of element 15
@param <T16> type of element 16
@param <T17> type of element 17
@param <T18> type of element 18
@param <T19> type of element 19
@param <T20> type of element 20
@return      a new {@link MutableTuple21}  that is empty.

@see Tuple21
@see Tuple
common-parent/tuple/src/main/java/com/speedment/common/tuple/MutableTuples.java