!7

p-exp {
  new ConceptsLoadedOnDemand cc;
  
  Concepts c1 = cc.get("case 1");
  assertSame(c1, cc.get("case 1"));
  
  Concepts c2 = cc.get("case 2");
  assertSame(c2, cc.get("case 2"));
  
  cleanUp(cc);
}