@BeforeClass public static void verifyEnv(){
  assertNotNull(address);
  assertNotNull(appId);
  assertNotNull(userId);
  assertNotNull(password);
  assertNotNull(rootToken);
}

@ BeforeClass public static void verifyEnv ( ) { assertNotNull ( address ) ; assertNotNull ( appId ) ; assertNotNull ( userId ) ; assertNotNull ( password ) ; assertNotNull ( rootToken ) ; }
every test method will need to retrieve vault credentials from environment variables , but we might as well null - check them once rather than do so redundantly in every method .
