DirectPostJwt
OID4VP: The Response Mode direct_post.jwt
causes the Wallet to send the Authorization Response using an HTTPS POST request instead of redirecting back to the Verifier. The Wallet adds the response parameter containing the JWT as defined in Section 4.1. of JARM and Section 6.3 in the body of an HTTPS POST request using the application/x-www-form-urlencoded
content type.