assertSame(objRel2To1, objRel1To2.getReverseRelationship());
// remove relationship and fk from model, merge to db and read to model
dbEntity2.removeRelationship(rel2To1.getName());
dbEntity1.removeRelationship(rel1To2.getName());
dbEntity2.removeAttribute(e2col2.getName());
List<MergerToken> tokens = createMergeTokens();
assertTokens(tokens, 2, 1);
for (MergerToken token : tokens) {
if (token.getDirection().isToDb()) {
execute(token);