EdgeRealizer er = graph.getRealizer(edge);
EdgeRealizer newEdgeRealizer = null;
if (associationType.equals(FamixInvocation.class)) {
newEdgeRealizer = new DefaultFamixEdgeRealizer(er);
} else if (associationType.equals(FamixInheritance.class)) {
newEdgeRealizer = new DeltaEdgeRealizer(er);
} else if (associationType.equals(FamixSubtyping.class)) {
newEdgeRealizer = new DashedDeltaEdgeRealizer(er);
} else if (associationType.equals(FamixCastTo.class)) {
newEdgeRealizer = new DefaultFamixEdgeRealizer(er);
} else if (associationType.equals(FamixCheckInstanceOf.class)) {