docs: def addEdge(self, outVertex, inVertex, label):
          """Creates a new edge
          @params outVertex: Edge origin Vertex
          @params inVertex: Edge target vertex
          @params label: Edge label
  
          @returns The created Edge object"""
          n1 = outVertex.neoelement
          n2 = inVertex.neoelement
          edge = n1.relationships.create(label, n2)
          return Edge(edge)