public boolean isSubjectChangeRequest(Message message) {
        return historyStrategy.isSubjectChangeRequest(message);
    }
Returns true if the given message qualifies as a subject change request, per XEP-0045.

@param message the message to check
@return true if the given packet is a subject change request
xmppserver/src/main/java/org/jivesoftware/openfire/muc/MUCRoomHistory.java