message: examples(useReactFlow): add addEdges
diff: -import { useCallback, MouseEvent } from 'react';
  +import { useCallback, MouseEvent, useEffect } from 'react';
  import ReactFlow, {
  Node,
  @@ -33,7 +33,7 @@ const UseZoomPanHelperFlow = () => {
  const [nodes, setNodes, onNodesChange] = useNodesState(initialNodes);
  const [edges, setEdges, onEdgesChange] = useEdgesState(initialEdges);
  const onConnect = (params: Connection | Edge) => setEdges((eds) => addEdge(params, eds));
  - const { project, setCenter, zoomIn, zoomOut, fitView, addNodes, setNodes: setNodesHook } = useReactFlow();
  + const { project, setCenter, zoomIn, zoomOut, fitView, addNodes, setNodes: setNodesHook, addEdges } = useReactFlow();
  const onPaneClick = useCallback(
  (evt: MouseEvent) => {
  @@ -72,6 +72,10 @@ const UseZoomPanHelperFlow = () => {
  addNodes(newNode);
  }, [addNodes]);
  + useEffect(() => {
  + addEdges({ id: 'e3-4', source: '3', target: '4' });
  + }, [addEdges]);
  +
  const onResetNodes = useCallback(() => setNodesHook(initialNodes), [setNodesHook]);
  return (
  