xwiki-web-gwt-dom-1.9-SNAPSHOT.jar don't compile with gwt 1.6

I get this error trying to compile my project using xwiki-web-gwt-dom-1.9-SNAPSHOT.jar (same with 2.0-SNAPSHOT) and gwt 1.6.4:

Removing units with errors
[ERROR] Errors in 'jar:file:/home/vjrj/.m2/repository/org/xwiki/platform/xwiki-web-gwt-dom/1.9-SNAPSHOT/xwiki-web-gwt-dom-1.9-SNAPSHOT.jar!/org/xwiki/gwt/dom/client/Document.java'
[ERROR] Line 323: Cannot override the final method from Document

The new com.google.gwt.dom.client.Document provides in gwt 1.6.4 the same method getDocument(). Removing this method in xwiki Document.java can fix this issue.