if (inlineMimeTypeSet.contains(responseData.getMimeType())) {
                contentDispositionType = "inline";
            } else {
                contentDispositionType = "attachment";
            }

            final String encodedName = URLEncoder.encode(name, Constants.UTF_8).replace("+", "%20");
            final String contentDispositionValue;
            if (name.equals(encodedName)) {

 */
public class DuplicateArtifactAttachmentException extends RuntimeException {

    private static final String DEFAULT_MESSAGE = "Duplicate artifact attachment detected.";

    private Artifact artifact;

    private final MavenProject project;

    public DuplicateArtifactAttachmentException(MavenProject project, Artifact artifact) {

        final String name = pi.getName();
        final String encodedName = URLEncoder.encode(name, Constants.UTF_8_CHARSET).replace("+", "%20");
        response.header("Content-Disposition", "attachment; filename=\"" + name + "\"; filename*=utf-8''" + encodedName);
        response.header("Pragma", "no-cache");
        response.header("Cache-Control", "no-cache");