public VirtualFile resolve(String relativeStr){
  VirtualFile f=getVirtualFile();
  return f == null ? null : f.resolve(relativeStr);
}

public VirtualFile resolve ( String relativeStr ) { VirtualFile f = getVirtualFile ( ) ; return f == null ? null : f . resolve ( relativeStr ) ; }
return an instance of this interface which represents the specified relative path .
