public boolean contains(Range<T> other) {
        return (other.v1 == null && v1 == null || contains(other.v1))
            && (other.v2 == null && v2 == null || contains(other.v2));
    }
Whether a range is contained in this range.
<p>
<pre><code>
// true
range(1, 3).contains(range(2, 3))

// false
range(1, 3).contains(range(2, 4))
</code></pre>
jOOL-java-8/src/main/java/org/jooq/lambda/tuple/Range.java