[jboss-jira] [JBoss JIRA] (ELY-321) Add getCredentialNames() method to RealmIdentity

Add getCredentialNames() method to RealmIdentity ------------------------------------------------ Key: ELY-321 URL: https://issues.jboss.org/browse/ELY-321 Project: WildFly Elytron Issue Type: Enhancement Components: API / SPI, Realms Reporter: David Lloyd Add a {{getCredentialNames()}} method to {{RealmIdentity}}. The description would be something like this: bq. Get the names of the available credentials in this identity. The {@link #getCredentialSupport(String)} method should be used to determine the exact level of support for each credential. The realm may have access to credentials which are not named in this set. The method should return the set or an empty set (never {{null}}). Initial PR could just update realms to return the empty set, or just implement for the easy realms, with followup JIRAs/PRs for the remainder. This probably should not be a default operation, since it is something that realms generally should explicitly support.