}

    @Override
    public void addMetadata(ArtifactMetadata metadata) {
        if (metadataMap == null) {
            metadataMap = new HashMap<>();
        }

        ArtifactMetadata m = metadataMap.get(metadata.getKey());
        if (m != null) {
            m.merge(metadata);
        } else {
            metadataMap.put(metadata.getKey(), metadata);
        }
    }

    @Override

        final String mimeType = responseData.getMimeType();
        final StringBuilder contentMetaBuf = new StringBuilder(1000);
        final Map<String, Object> dataMap = new HashMap<>();
        final Map<String, Object> metaDataMap = new HashMap<>();
        String content;
        try (final InputStream in = responseData.getResponseBody()) {