[Feat]: 使用交互创建边，完成创建时，在onFinish回调中手动添加port连接桩，但是保存数据时，调用graph.getEdgeData()方法时，无法获取手动添加的port
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feature 💡
- Dominant language
- TypeScript
- Stars
- 12.3k
- Forks
- 1.6k
- PR merge metrics
- No merged PRs in 30d
Description
### Describe the feature / 功能描述
使用交互创建边，完成创建时，在onFinish回调中手动添加port连接桩，但是保存数据时，调用graph.getEdgeData()方法时，无法获取手动添加的port，我希望知道怎么才能添加进去port，并且，在后续获取边数据时，可以看到style中有sourcePort和targetPort
### Are you willing to contribute? / 是否愿意参与贡献？
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Research direction
Reproduce interactive edge creation in G6, focusing on the onFinish callback and the graph.getEdgeData() result. Trace how manually added port data is stored and serialized; done when the saved edge style includes both sourcePort and targetPort.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- typescript
- Domain
- data-visualization
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 30/100