long[] contributorIds = getContributorIds(namespace);
String[] contributorIds = getContributorIds(namespace);
	public IExtension getExtension(String extensionId) {		if (extensionId == null)			return null;		int lastdot = extensionId.lastIndexOf('.');		if (lastdot == -1)			return null;		String namespace = extensionId.substring(0, lastdot);		long[] contributorIds = getContributorIds(namespace);		for (int i = 0; i < contributorIds.length; i++) {			int[] extensions = registryObjects.getExtensionsFrom(contributorIds[i]);			for (int j = 0; j < extensions.length; j++) {				Extension ext = (Extension) registryObjects.getObject(extensions[j], RegistryObjectManager.EXTENSION);				if (extensionId.equals(ext.getUniqueIdentifier()) && registryObjects.getExtensionPointObject(ext.getExtensionPointIdentifier()) != null) {					return (IExtension) registryObjects.getHandle(extensions[j], RegistryObjectManager.EXTENSION);				}			}		}		return null;	}