feat: update demos

examples/move-demo/src/wowo/ImportExample.java

 package wowo;
 
 import wowo.b.PlaceHolder;
+import wowo.a.OriginExample;
 
 public class ImportExample {
     private PlaceHolder placeHolder;
+    private OriginExample originExample;
+
+    public ImportExample(PlaceHolder placeHolder) {
+        this.placeHolder = placeHolder;
+    }
 }