getCustomAction  
  inline suspend fun ChatbotClient.getCustomAction(crossinline block: GetCustomActionRequest.Builder.() -> Unit): GetCustomActionResponse
Returns a custom action.
Samples
fun main() { 
   //sampleStart 
   // Get a custom action
val resp = chatbotClient.getCustomAction {
    customActionArn = "arn:aws:chatbot::1234567890:custom-action/my-custom-action"
} 
   //sampleEnd
}