@Override
    public void destroy() {
        this.searchOperation.getConnectionFactory().close();
    }
Instantiates a new action.

@param ipsToCheckPattern              the ips to check pattern
@param alternativeRemoteHostAttribute the alternative remote host attribute
@param dnsTimeout                     # of milliseconds to wait for a DNS request to return
@param searchOperation                the search operation
@param spnegoAttributeName            the certificate revocation list attribute name
support/cas-server-support-spnego-webflow/src/main/java/org/apereo/cas/web/flow/client/LdapSpnegoKnownClientSystemsFilterAction.java