GoogleCredential credential = getCredentials(apiKey);
String emailAddress = null;
try{
Plus plus = new Plus(httpTransport, jsonFactory, credential);
Person mePerson = plus.people().get("me").execute();
List<Person.Emails> emails = mePerson.getEmails();
for (Person.Emails email : emails){
if (email.getType().equals("account")){
emailAddress = email.getValue();
}