.fromFile()
.build()
.generateCredential();
// Construct a DfpSession.
DfpSession session = new DfpSession.Builder()
.fromFile()
.withOAuth2Credential(oAuth2Credential)
.build();
// Remove any network code set from the ads.properties file.
session.setNetworkCode(null);
DfpServices dfpServices = new DfpServices();
runExample(dfpServices, session);
}