Iterate through methodChannels and invoke method

sendEvent.kt

fun sendEvent(event: String, body: Map<String, Any>) {
    eventHandlers.reapCollection().forEach { it.get()?.send(event, body) }

    if (event == CallkitConstants.ACTION_CALL_DECLINE) {
        for ((name, channel) in methodChannels) {
            try {
                channel.invokeMethod("CALL_DECLINED_CUSTOM", "")
            } catch (e: Exception) {
                Log.d(EXTRA_CALLKIT_CALL_DATA, e.toString())
            }
        }
    }
}