// If you do not have a client ID or secret, please create one in the
// API console: https://code.google.com/apis/console#access and set it
// in the ads.properties file.
GoogleClientSecrets clientSecrets = null;
try {
clientSecrets = new GoogleClientSecretsBuilder()
.forApi(Api.DFA)
.fromFile()
.build();
} catch (ValidationException e) {
System.err.println(