Trigger the authentication of the user in the current context. May perform HTTP redirections or any other procedure to gather the authentication status if the user, so don't expect it to return control once called.
Overrides AuthenticationEngine::authenticate() (Trigger the authentication of the user in the current context. May perform HTTP redirections or any other procedure to gather the authentication status if the user, so don't expect it to return control once called.)
Overrides AuthenticationEngine::getAttribute() (Get an specific attribute for the current user, by specifying its name and namespace. May trigger some attribute query procedure.)
Overrides AuthenticationEngine::getAttributes() (Get an associative array with the set of common attributes for the current user. May trigger some attribute recollection.)
Overrides AuthenticationEngine::isAuthenticated() (Check the current authentication status withing this context. Does not trigger any authentication procedure.)