startTyping method
Sends start typing event.
Implementation
void startTyping() {
sbLog.i(StackTrace.current);
final now = DateTime.now().millisecondsSinceEpoch;
if (now - _lastStartTypingTimestamp >
chat.chatContext.options.typingIndicatorThrottle) {
final cmd = Command.buildStartTyping(channelUrl, now);
chat.commandManager.sendCommand(cmd);
_lastStartTypingTimestamp = now;
_lastEndTypingTimestamp = 0;
}
}