docs: private DataSet<Edge<K, EV>> getPairwiseEdgeIntersection(DataSet<Edge<K, EV>> edges) {
  		return this.getEdges()
  				.coGroup(edges)
  				.where(0, 1, 2)
  				.equalTo(0, 1, 2)
  				.with(new MatchingEdgeReducer<>())
  					.name("Intersect edges");
  	}