Action API object
Builds a catalog component for an Interactive message
Optional
The thumbnail product to be shown in the catalog. If not provided, the first product will be used (or so says the docs, but it doesn't work).
Seems like the API throws an error if you try to send a catalog message without a thumbnail, but the signature will keep the optional parameter in case WhatsApp decides to make their API work as expected :)
Readonly
The name of the component
The thumbnail product to be shown in the catalog
Action API object