public CreateDataSetRequest addFieldFoldersEntry(String key, FieldFolder value) {
        if (null == this.fieldFolders) {
            this.fieldFolders = new java.util.HashMap<String, FieldFolder>();
        }
        if (this.fieldFolders.containsKey(key))
            throw new IllegalArgumentException("Duplicated keys (" + key.toString() + ") are provided.");
        this.fieldFolders.put(key, value);
        return this;
    }
Add a single FieldFolders entry

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