The ADFS handler is only available if the adsfs.so extension library is loaded by the SP.

The SP  <Sessions> Configuration  support for ADFS provides support for

Default Simplified Protocol Configuration for ADFS

<SSO/>

<SSO>ADFS</SSO>


<!-- Equivalent to -->
   
<SessionInitiator type="ADFS"/>
<md:AssertionConsumerService Binding="http://schemas.xmlsoap.org/ws/2003/07/secext" Location="/ADFS" />

<Logout/>

<Logout>ADFS</Logout>


<!-- Equivalent to -->
<LogoutInitiator type="ADFS"/>
<md:SingleLogoutService Binding="http://schemas.xmlsoap.org/ws/2003/07/secext" Location="/ADFS" />