* The supplied request may also refer to a single concrete version rather than a version range.
     * In this case though, the result contains simply the (parsed) input version, regardless of the
     * repositories and their contents.
     *
     * @param artifact the artifact for which to resolve the versions
     * @return a list of resolved {@code Version}s.

                // NOTE: There's java.nio.charset.MalformedInputException and sun.io.MalformedInputException
                if (e.getClass().getName().endsWith("MalformedInputException")) {
                    msg = "Some input bytes do not match the file encoding.";
                } else {
                    msg = e.getClass().getSimpleName();
                }
            }
            problems.add(
                    Severity.FATAL,

        if (!Files.exists(metadataPath)) {
            return Metadata.newInstance();
        }

        try (InputStream input = Files.newInputStream(metadataPath)) {
            return new MetadataStaxReader().read(input, false);
        } catch (IOException | XMLStreamException e) {
            throw new RepositoryException("Could not parse metadata " + metadataPath + ": " + e.getMessage(), e);