Performs the multi-realm authentication attempt by calling back to a {@link AuthenticationStrategy} object
as each realm is consulted for {@code AuthenticationInfo} for the specified {@code token}.
@param realms the multiple realms configured on this Authenticator instance.
@param token the submitted AuthenticationToken representing the subject's (user's) log-in principals and credentials.
@return an aggregated AuthenticationInfo instance representing account data across all the successfully
consulted realms.
Performs the multi-realm authentication attempt by calling back to a {@link AuthenticationStrategy} object as each realm is consulted for {@code AuthenticationInfo} for the specified {@code token}.
@param realms the multiple realms configured on this Authenticator instance. @param token the submitted AuthenticationToken representing the subject's (user's) log-in principals and credentials. @return an aggregated AuthenticationInfo instance representing account data across all the successfully consulted realms.