### Question:
IdTokenValidator { public void validate() { validateIssuer(); validateSubject(); validateAudience(); validateNonce(); validateTimestamp(); } private  IdTokenValidator(final Builder builder); void validate();  }### Answer:
@Test public void testSuccess() { final LineIdToken idToken = new LineIdToken .Builder() .issuer(ISSUER) .subject(USER_ID) .audience(CHANNEL_ID) .issuedAt(NOW) .expiresAt(ONE_HOUR_LATER) .nonce(NONCE) .build(); final IdTokenValidator validator = buildValidator(idToken); validator.validate(); }