public AttributeMap getContentAsAttributeMap() {
            if (StroomZipFileType.META.getExtension().equals(type)) {
                return AttributeMapUtil.create(content);
            } else {
                throw new UnsupportedOperationException(LogUtil.message(
                        "Can't convert {} to an AttributeMap", type));
            }
        }
The {@link UniqueId} of the wrapping zip
stroom-proxy/stroom-proxy-app/src/test/java/stroom/proxy/app/MockHttpDestination.java