public Builder withBlockingRefreshPredicate(SdkPredicate<T> shouldDoBlockingRefresh) {
            this.shouldDoBlockingRefresh = shouldDoBlockingRefresh;
            return this;
        }
Set the predicate that will determine when the task will do a blocking refresh.

@return This object for method chaining.
aws-java-sdk-sts/src/main/java/com/amazonaws/auth/RefreshableTask.java