contentType

Must be a valid a media type used in a Content-Type header as defined in the RFC 2616. Media type of the schema document (e.g. application/json, application/xml).
- Swagger Schema use application/vnd.ms-azure-apim.swagger.definitions+json
- WSDL Schema use application/vnd.ms-azure-apim.xsd+xml
- OpenApi Schema use application/vnd.oai.openapi.components+json
- WADL Schema use application/vnd.ms-azure-apim.wadl.grammars+xml.