protected void setRetryRule(RetryRule retry) {
        this.retry = retry;
    }
Before of super class is guaranteed to be called before that of a subclass so the following
is safe. http://junit-team.github.io/junit/javadoc/latest/org/junit/Before.html
aws-java-sdk-test-utils/src/main/java/com/amazonaws/test/AWSIntegrationTestBase.java