QuerySolutionMap smap1 = new QuerySolutionMap() ;
QuerySolutionMap smap2 = new QuerySolutionMap() ;
smap1.add("o", m.createLiteral("y1"));
smap2.addAll(smap1) ;
assertTrue(smap2.contains("o")) ;
smap2.clear() ;
assertFalse(smap2.contains("o")) ;
assertTrue(smap1.contains("o")) ;
QuerySolutionMap smap3 = new QuerySolutionMap() ;
smap2.addAll((QuerySolution)smap1) ;