code: Observable<ComapiResult<Void>> doIsTyping(@NonNull final String token, @NonNull final String conversationId, final boolean isTyping) {
          if (isTyping) {
              return wrapObservable(service.isTyping(AuthManager.addAuthPrefix(token), apiSpaceId, conversationId).map(mapToComapiResult()), log, "Sending is typing.");
          } else {
              return wrapObservable(service.isNotTyping(AuthManager.addAuthPrefix(token), apiSpaceId, conversationId).map(mapToComapiResult()), log, "Sending is not typing");
          }
      }
docs: Send information if user started or stopped typing message in a conversation.
  
  @param token          Comapi access token.
  @param conversationId Id of the conversation.
  @return Observable to send 'is typing' notification.