invoke cds with odata:v2 option

https://help.sap.com/viewer/65de2977205c403bbc107264b8eccf4b/Cloud/en-US/2fb938b36bad49eaa6e7ad7aa3553ead.html?q=odata:v2

Hi,

I found this in the documentation. But not sure how to "invoke" with the odata:v2 option.

I know the @sap/cds-odata-v2-adapter-proxy way, but not sure if it has been built into the core cds modules.

Can someone explain? Thanks.