assertLoggedMessagePattern("Unable to process attribute value \\(of element flag\\): "
+ "'maybe' is not a boolean value \\(which should be either 'true' or 'false'\\)\\.");
assertEquals(3, l.size());
BooleanHolder h = (BooleanHolder) l.get(0);
assertEquals(true, h.getValue());
h = (BooleanHolder) l.get(1);
assertEquals(false, h.getValue());
h = (BooleanHolder) l.get(2);
assertEquals(false, h.getValue());
}