Add Hero Card in bot framework using rasa

I want to know how can I send image_with_url (https://github.com/RasaHQ/rasa_core/blob/beec99300523d499ee4a99c9289c274a5ef746f6/rasa_core/channels/botframework.py#L107) and text_with_buttons(https://github.com/RasaHQ/rasa_core/blob/beec99300523d499ee4a99c9289c274a5ef746f6/rasa_core/channels/botframework.py#L118) in botframework from action.py file as you provide support for it and if possible please provide dummy code for adding hero card.

P.S. Update rasa documentation with how to add hero card in bot framework @rasa_HQ Team @akelad