public interface MutableMessageChannel<R,M> extends MessageChannel<R,M> {

    /**
     * Adds a recipient to this MessageChannel
     *
     * @param recipient The recipient to add
     *
     * @return If the list of recipients changed as a result of this call
     */
    boolean addRecipient(R recipient);

    /**
     * Clears the list of recipients
     */
    void clearRecipients();

    /**
     * Removes a recipient to this MessageChannel
     *
     * @param recipient The recipient to remove
     *
     * @return If the list of recipients changed as a result of this call
     */
    boolean removeRecipient(R recipient);
}