/** * Create a direct message room with one participant.<br> * The participant can be a user ID or mail address. Once the room is created, on success, the room * is set as a "direct message" with the participant. * * @param aParticipantUserId user ID (or user mail) to be invited in the direct message room * @param aCreateRoomCallBack async call back response * @return true if the invite was performed, false otherwise */ public boolean createDirectMessageRoom(final String aParticipantUserId, final ApiCallback<String> aCreateRoomCallBack) { return createDirectMessageRoom(aParticipantUserId, null, aCreateRoomCallBack); }