public WindowRows<A> range() {
        value = null;
        int offset = orderBy.size() + partitionBy.size() + 1;
        return new WindowRows<A>(this, " range", offset);
    }
{@code WindowFunction} is a builder for window function expressions

@param <A> expression type

@author tiwe
querydsl-sql/src/main/java/com/querydsl/sql/WindowFunction.java