Layer7 API Management

We have a requirement - where in a response from a end point returns an xml payload to the gateway ( routing response returned to the api gateway ) . In the xml body , we have html and images ( format gif ) that both need to be decoded and handled. Is there any specific content type that I should be setting to handle the html , image portions in the xml rrouting esponse from the end point coming back into the api gateway ?

We are on version 9.0 of the api gateway.

If the html or image in a xml element, I would expect it's encoded, such as base64 encode. Then you can use xpath assertion to get the encoded string, and then decode it accordingly.

Otherwise, the response should return those contents in MIME multi-part format. Then you may use ${response.parts.x} to get the binary data, and ${response.parts.x.body} to get the text data.