private static File getKeystoreFile() throws Exception {
        val jwksKeystore = new ClassPathResource("sample.jwks");
        val data = IOUtils.toString(jwksKeystore.getInputStream(), StandardCharsets.UTF_8);
        val keystoreFile = new File(FileUtils.getTempDirectoryPath(), "sample.jwks");
        FileUtils.write(keystoreFile, data, StandardCharsets.UTF_8);
        return keystoreFile;
    }
This is {@link JsonWebKeySetStringCipherExecutorTests}.

@author Misagh Moayyed
@since 5.3.0
core/cas-server-core-util/src/test/java/org/apereo/cas/util/cipher/JsonWebKeySetStringCipherExecutorTests.java