Exceptions: Failure
+
+setExpirationTimer(number<s>, expiration<i>) -> <>::
+* number : Phone number of recipient
+* expiration : int32 for the number of seconds before messages to this recipient disappear. Set to 0 to disable expiration.
+
+Exceptions: Failure
+
setContactBlocked(number<s>, block<b>) -> <>::
* number : Phone number affected by method
* block : 0=remove block , 1=blocked