public boolean isNullableOther() {
        return nullableOther;
    }
Returns if this JoinType can produce results that are {@code null} for
entities belonging to another Stage.

@return if this JoinType can produce results that are {@code null} for
entities belonging to another Stage
runtime-parent/runtime-join/src/main/java/com/speedment/runtime/join/stage/JoinType.java