I am using flexible webhooks. After an intent has been matched, I want to make a flexible webhook call and I want to pass the detected language code to my webhook controller. I know that the language code is present in the standard webhook requests with the name 'languageCode', but I can't figure out how to get access to this value if I am not using standard webhooks. Clearly, after an intent has been matched, the language is known to Dialogflow CX. How can I pass this language code to my flexible webhooks?
Thanks