+ " It is derived from the main artifact.");
    }

    public boolean isSnapshot() {
        return parent.isSnapshot();
    }

    public void addMetadata(ArtifactMetadata metadata) {
        // ignore. The parent artifact will handle metadata.
        // we must fail silently here to avoid problems with the artifact transformers.
    }

        if (cachedXPathAPI == null) {
            cachedXPathAPI = new XPathAPI();
            xpathAPI.set(cachedXPathAPI);
        }
        return cachedXPathAPI;
    }

    public void addMetadata(final String name, final String xpath) {
        metadataXpathMap.put(name, xpath);
    }

    /*
     * (non-Javadoc)
     *
     * @see