credentials = nextCredentials(provider, e.getMessage());
credentials = nextCredentials(provider, myDelegate.getRealm());
    public void diff(String url, long revision, String target, boolean ignoreAncestry, boolean recursive, ISVNReporterBaton reporter, ISVNEditor editor)            throws SVNException {        ISVNCredentials credentials = null;        ISVNCredentialsProvider provider = initProvider();        while(true) {            try {                myDelegate.setCredentials(credentials);                myDelegate.diff(url, revision, target, ignoreAncestry, recursive, reporter, editor);                accept(provider, credentials);                return;            } catch (SVNAuthenticationException e) {                notAccept(provider, credentials, e.getMessage());                credentials = nextCredentials(provider, e.getMessage());            }        }    }