protected void onVertexPropertyChanged(final Vertex vertex, final String key, final Object oldValue, final Object newValue) {
this.eventGraph.getTrigger().addEvent(new VertexPropertyChangedEvent(vertex, key, oldValue, newValue));
}
protected void onEdgePropertyChanged(final Edge edge, final String key, final Object oldValue, final Object newValue) {
this.eventGraph.getTrigger().addEvent(new EdgePropertyChangedEvent(edge, key, oldValue, newValue));
}