private void addImportedPackages(ExportPackageDescription[] packages) {
private synchronized void addImportedPackages(ExportPackageDescription[] packages) { if (importsInit) return;
	private void addImportedPackages(ExportPackageDescription[] packages) {		if (packages != null && packages.length > 0) {			if (importedSources == null)				importedSources = new KeyedHashSet(packages.length, false);			for (int i = 0; i < packages.length; i++) {				PackageSource source = createExportPackageSource(packages[i]);				if (source == null)					return;				importedSources.add(source);			}		}	}