@Override
    public java.util.concurrent.Future<GetSessionTokenResult> getSessionTokenAsync() {

        return getSessionTokenAsync(new GetSessionTokenRequest());
    }
Simplified method form for invoking the GetSessionToken operation.

@see #getSessionTokenAsync(GetSessionTokenRequest)
aws-java-sdk-sts/src/main/java/com/amazonaws/services/securitytoken/AWSSecurityTokenServiceAsyncClient.java