presto-main/src/main/java/io/prestosql/metadata/HandleResolver.java/HandleResolver/HandleResolver
class HandleResolver:    @Inject
    public HandleResolver()
    {
        addCatalogHandleResolver(REMOTE_CONNECTOR_ID.toString(), new RemoteHandleResolver());
        addCatalogHandleResolver("$system", new SystemHandleResolver());
        addCatalogHandleResolver("$info_schema", new InformationSchemaHandleResolver());
        addCatalogHandleResolver("$empty", new EmptySplitHandleResolver());
    }