'Link two existing edges with each other'

def newLink(self, src, dst, label=None):

    try:
        s = self.getEdge(src)
        try:
            d = self.getEdge(dst)
            s['to'].append(d['id'])
        except:
            print '/*    (newLink):    Cannot    get    the    destination    edge    */'
    except:
        print '/*    (newLink):    Cannot    get    the    source    edge    */'
