const char *componentType)
const char *componentType, const nsModuleComponentInfo *info)
RegisterXMLExtras(nsIComponentManager *aCompMgr,                  nsIFile *aPath,                  const char *registryLocation,                  const char *componentType){  // get the registry  nsIRegistry* registry;  nsresult rv = nsServiceManager::GetService(NS_REGISTRY_CONTRACTID,                                             NS_GET_IID(nsIRegistry),                                             (nsISupports**)&registry);  if (NS_SUCCEEDED(rv)) {    registry->OpenWellKnownRegistry(nsIRegistry::ApplicationComponentRegistry);    char buffer[256];    char *cid = nsXMLExtras::GetCID().ToString();    PR_snprintf(buffer,                sizeof buffer,                "%s/%s",                NS_IAPPSHELLCOMPONENT_KEY,                cid ? cid : "unknown" );    nsCRT::free(cid);    nsRegistryKey key;    rv = registry->AddSubtree(nsIRegistry::Common,                              buffer,                              &key );    nsServiceManager::ReleaseService(NS_REGISTRY_CONTRACTID, registry);  }  return rv;}