public UntagResourcesResult addFailedResourcesMapEntry(String key, FailureInfo value) {
        if (null == this.failedResourcesMap) {
            this.failedResourcesMap = new java.util.HashMap<String, FailureInfo>();
        }
        if (this.failedResourcesMap.containsKey(key))
            throw new IllegalArgumentException("Duplicated keys (" + key.toString() + ") are provided.");
        this.failedResourcesMap.put(key, value);
        return this;
    }
Add a single FailedResourcesMap entry

@see UntagResourcesResult#withFailedResourcesMap
@returns a reference to this object so that method calls can be chained together.
aws-java-sdk-resourcegroupstaggingapi/src/main/java/com/amazonaws/services/resourcegroupstaggingapi/model/UntagResourcesResult.java