* group related tasks together when presenting a list of tasks to the user.
     *
     * @param group The task group for this task. Can be null.
     */
    void setGroup(@Nullable String group);

    /**
     * <p>Returns the inputs of this task.</p>
     *
     * @return The inputs. Never returns null.
     */
    @Internal
    TaskInputs getInputs();

    /**