}

    protected ExternalResourceName getBase() {
        return pattern;
    }

    protected String substituteTokens(String pattern, Map<String, String> attributes) {
        return PatternHelper.substituteTokens(pattern, attributes);
    }

    protected Map<String, String> toAttributes(ModuleComponentArtifactMetadata artifact) {

        if (tokens.containsKey('organisation')) {
            tokens.put('organisation', organisationToken(m2Compatible, tokens.get('organisation')))
        }
        IvyPatternHelper.substituteTokens(pattern, tokens)
    }