@Override
    default int degree() {
        return 0;
    }
This interface defines a generic {@link TupleOfNullables} of degree0 that can
hold null values. A TupleOfNullable is type safe, immutable and thread safe.
For pure non-null value elements see {@link Tuple}. For mutable tuples see
{@link MutableTuple}
This {@link TupleOfNullables} has a degree of 0
<p>
Generated by com.speedment.sources.pattern.tuple.TuplePattern

@author Per Minborg

@see Tuple
@see TupleOfNullables
@see MutableTuple
common-parent/tuple/src/main/java/com/speedment/common/tuple/nullable/Tuple0OfNullables.java