Chained Java Code Completion doesn't work

see the code:

class AbstractCodeAssistance {
     private MiddleMan middleMan;
     public MiddleMan getMiddleMan() {
          return this.middleMan;
     }
      public void doAssist() {
          Editor editor =  // I press Ctrl+Shift+Space twice here, but there isn't suggestions.
                           // It should suggest "getMiddleMan().getEditor()"
     }
}
class MiddleMan {
     private Editor editor;
     public Editor getEditor() {
          return this.editor;
     }
}
class Editor {
}