About the organization of this file, I'd like to have all stuffs regarding client in the same part :
```<sec:http authentication-manager-ref="clientAuthenticationManager" ...
<bean id="clientCredentialsTokenEndpointFilter"...
<sec:authentication-manager id="clientAuthenticationManager"...
<bean id="clientDetailsUserService"...
<bean id="casClientDetailsService"...```

It would be easier to read, I think... Maybe with a big comment saying "Client confirmation part"...