private void initVerifier(String scope, Collection<String> additionalVerifierRules) {
VerifierConfiguration conf = new DefaultVerifierConfiguration();
if(useDefaultConfig){
conf = new DefaultVerifierConfiguration();
}else{
conf = new VerifierConfigurationImpl();
}
conf.getVerifyingScopes().clear();
conf.getVerifyingScopes().add( scope );
conf.setAcceptRulesWithoutVerifiyingScope( true );