It's generally not needed to use JAAS for most of the applications, especially if they are HTTP based, and you should most likely choose one of our other adapters.
However, some applications and systems may still rely on pure legacy JAAS solution.
It's using <<fake/../../oidc-generic.adoc#_resource_owner_password_credentials_flow,Resource Owner Password Credentials>> flow to validate if the provided
username/password is valid. It's useful for non-web based systems, which need to rely on JAAS and want to use {{book.project.name}}, but can't use the standard browser
This login module allows to authenticate with {{book.project.name}} access token passed to it through CallbackHandler as password.
It may be useful for example in case, when you have {{book.project.name}} access token from standard based authentication flow and your web application then
The location of the `keycloak.json` configuration file. The configuration file can either be located on the filesystem or on the classpath. If it's located
on the classpath you need to prefix the location with `classpath:` (for example `classpath:/path/keycloak.json`).
