}
private void addWire(ReferenceArtifact r, ServiceArtifact s) {
WireArtifact edge = new NormalWire();
Element wire = edge.addElement(doc, svgNS, r, s, getChangingFactor(), getColor());
svgRoot.appendChild(wire);
}
private void addWire(ServiceArtifact s1, ServiceArtifact s2) {