[
  {
    type: 'start',
    nodeId: '1',
    nodeSequence:1,
  },
  {
    lastid: '',
    type: 'approver',
    nodeId: '2',
    nodeSequence:2,
  },
  {
    type: 'condition',
    nodeId: '3',
    nodeSequence:3,
  },
  {
    type: 'condition',
    nodeId: '4',
    nodeSequence:3,
  },
  {
    lastid: '3',
    type: 'condition',
    nodeId: '5',
    nodeSequence:4,
  },
  {
    lastid: '3',
    type: 'condition',
    nodeId: '6',
    nodeSequence:4,
  },
  {
    lastid: '4',
    type: 'condition',
    nodeId: '5',
    nodeSequence:4,
  },
  {
    lastid: '4',
    type: 'condition',
    nodeId: '6',
    nodeSequence:4,
  },
  {
    lastid: '',
    type: 'condition',
    nodeId: '6',
    nodeSequence:5,
  },
]



/**
 * Q: 分支节点的汇合处，该怎么定义他的下一个节点（也就是汇合节点）
 */