Top-Down ws wizard overwrites all java classes containing '@WebService(' string anywhere in the code

this came up as a result of JBIDE-7681 (see comment from 12/15/10)

-create a new Dynamic web project
-create following interface there:

package x;

import javax.jws.WebService;

@WebService()
public interface Zws {
String test();
}

-create following class there:
package x;

import javax.jws.WebService;

@WebService()
public class ZwsImpl {
public String test()

{ return "Hello Dolly!"; }

}

-create some Top-Down ws there using default settings package (use default package)
-open ZwsImpl.java in the editor

=>
Current: ZwsImpl class is rewritten
Expected: the class remains untouched

Note for myself: Check this also for Bottom up case