Method e2

src/test/java/com/github/davidmoten/rtree/RTreeTest.java:1107–1109

(int n)

    }

    static Entry<Object, Rectangle> e2(int n) {
        return Entries.<Object, Rectangle>entry(n, r(n - 1));
    }

    private static Rectangle r(int n) {
        return rectangle(n, n, n + 1, n + 1);