@BeforeEach
    void setup() {
        SpringExpressionLanguageValueResolver.getInstance().withApplicationContext(applicationContext);
    }
This is {@link DefaultOAuth20ClientSecretValidatorTests}.

@author Misagh Moayyed
@since 6.6.0
support/cas-server-support-oauth/src/test/java/org/apereo/cas/support/oauth/validator/DefaultOAuth20ClientSecretValidatorTests.java