public String getIdentity() {
        return identity;
    }
Returns the identity asserted by the external SSL termination service.
As authentication will have completed with respect to the SSL
termination service by the time this session is created, this will
always be non-null.

@return
    The identity asserted by the external SSL termination service.
extensions/guacamole-auth-sso/modules/guacamole-auth-sso-ssl/src/main/java/org/apache/guacamole/auth/ssl/SSLAuthenticationSession.java