Generate a challenge when access is denied for unauthenticated users. On a 403 (access denied), if there are no credentials on the request,
public AuthenticationProvider
public Auth
public AuthenticationCollec
Interface for authentication providers. Hierarchy interface \Drupal\Core\Authentication\
public AuthenticationCollector::getProvid
public AuthenticationManager::__construct(Aut
protected AuthenticationManager::getProvider(Request
public AuthenticationCollector::addProvid
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