@@ -0,0 +1,230 @@
+package org.mutabilitydetector.benchmarks.circular;%0A%0Apublic final class HasCircularReference %7B%0A    public final HasCircularReference h;%0A%0A    public HasCircularReference(HasCircularReference other) %7B%0A        this.h = other;%0A    %7D%0A%7D

Move class from demo package in the client to a benchmark test case.