Apigee OAuth Using Auth Code

How do i use OAuth auth code grant type for my Apigee Developer portal? All examples i see is client credentials grant type.

Also, I’ve found a doc here but i can’t find any code snippet for proxies flow and its policies.

Sir Dino has a nice end to end auth code with PKCE sample you could refer to here.

https://www.googlecloudcommunity.com/gc/Cloud-Product-Articles/Dispensing-tokens-via-OAuthV2-with-PKCE-RFC-7636/ta-p/75915

It is mentioned in the doc(https://docs.apigee.com/api-platform/security/oauth/oauth-v2-policy-authorization-code-grant-type#codesample)

but you can refer https://github.com/apigee/api-platform-samples/tree/master/sample-proxies/oauth-advanced