class Projection extends Tuple6<KC, VVC, VV, VV, EV, EV> {

	public VV getsSourceVertexValue() {
		return this.f2;
	}

	public  Projection();
	public  Projection(
			Vertex<KC, VVC> connectingVertex,
			VV sourceVertexValue, VV targetVertexValue,
			EV sourceEdgeValue, EV targetEdgeValue);

}