int index= fPath.indexOf(SEPARATOR);
int index= fPath.indexOf(IJavaSearchScope.JAR_FILE_ENTRY_SEPARATOR);
	public IPath getPackageFragmentRootPath() {		int index= fPath.indexOf(SEPARATOR);		if (index > 0) {			return new Path(fPath.substring(0, index));		} else {			int removeSegments= 1; // the file name			int packNameLen= fPackage.length();			if (packNameLen > 0) {				removeSegments++;				for (int i= 0; i < packNameLen; i++) {					if (fPackage.charAt(i) == '.')						removeSegments++;				}			}			return (new Path(fPath)).removeLastSegments(removeSegments);		}	}	