docs: public static <V, E> Graph<V, E> loadGraph(String path, EdgeLineProcessor<E> lineProcessor,
                      VertexFactory<V> vertexFactory, int numVertices, boolean allowMultipleEdges) throws IOException {
          Graph<V, E> graph = new Graph<>(numVertices, allowMultipleEdges, vertexFactory);
  
          try (BufferedReader br = new BufferedReader(new FileReader(new File(path)))) {
              String line;
              while ((line = br.readLine()) != null) {
                  Edge<E> edge = lineProcessor.processLine(line);
                  if (edge != null) {
                      graph.addEdge(edge);
                  }
              }
          }
  
          return graph;
      }