catch (Throwable t)
{
checkThrowable(IllegalArgumentException.class, t);
}
TestStringToMyVersionComparator comparator = new TestStringToMyVersionComparator();
registry.registerVersionComparator(String.class, MyVersion.class, comparator);
assertTrue(registry.compare(version1, version2) < 0);
assertTrue(registry.compare(version2, version1) > 0);
registry.removeVersionComparator(MyVersion.class, String.class);