Before Creating the Enhancement Request

• I have confirmed that this should be classified as an enhancement rather than a bug/feature.
  To pick up a draggable item, press the space bar. While dragging, use the arrow keys to move the item. Press space again to drop the item in its new position, or press escape to cancel.

Summary

Use fastjson2 to replace fastjson1.

Motivation

Use fastjson2 to replace fastjson1.

Describe the Solution You'd Like

Use fastjson2 to replace fastjson1.

Describe Alternatives You've Considered

No

Additional Context

No response