public static <T0, T1, T2, T3, T4, T5, T6> MutableTuple7<T0, T1, T2, T3, T4, T5, T6> create7() {
        return new MutableTuple7Impl<>();
    }
Creates and returns a new {@link MutableTuple7}  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
@return     a new {@link MutableTuple7}  that is empty.

@see Tuple7
@see Tuple
common-parent/tuple/src/main/java/com/speedment/common/tuple/MutableTuples.java