@Override
    public java.util.concurrent.Future<GetSessionTokenResult> getSessionTokenAsync(
            com.amazonaws.handlers.AsyncHandler<GetSessionTokenRequest, GetSessionTokenResult> asyncHandler) {

        return getSessionTokenAsync(new GetSessionTokenRequest(), asyncHandler);
    }
Simplified method form for invoking the GetSessionToken operation with an AsyncHandler.

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