@Test public void assemblerFile_1() {

    AuthorizationService authService = (AuthorizationService)AssemblerUtils.build(DIR+"assem-security-registry-1.ttl", VocabSecurity.tSecurityRegistry);
    assertNotNull(authService);
    SecurityRegistry sReg = (SecurityRegistry)authService;
    assertEquals(4, sReg.keys().size());
    assertEquals(3, sReg.get("user1").visibleGraphs().size());
}