public abstract void diff(SVNURL url, long revision, String target, boolean ignoreAncestry, boolean recursive, ISVNReporterBaton reporter, ISVNEditor editor) throws SVNException;
public abstract void diff(SVNURL url, long targetRevision, long revision, String target, boolean ignoreAncestry, boolean recursive, ISVNReporterBaton reporter, ISVNEditor editor) throws SVNException;
    public abstract void diff(SVNURL url, long revision, String target, boolean ignoreAncestry, boolean recursive, ISVNReporterBaton reporter, ISVNEditor editor) throws SVNException;