onLink(targetPath, refLink) {
      const originNode = targetPath.node
      const destNode = refLink.path.node
      const linkLabel = refLink.label

      // originNode._id = originNode._id || Math.random()
      // destNode._id = destNode._id || Math.random()
      nodes.add(originNode)
      nodes.add(destNode)
      links.push({ from: originNode, to: destNode, label: linkLabel })
    }
@param {import('@babel/traverse').NodePath<import('@babel/types').Node>} targetPath
@param {*} refLink