@POST
  @Consumes(MediaType.MULTIPART_FORM_DATA)
  @Produces({MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON})
  @ApiOperation(
      value = "Returns a GEO label LML representation",
      notes = "Requires metadata/feedback documents as data stream")
  @ApiResponses({@ApiResponse(code = 400, message = "Error in feedback/metadata document")})
  public Label getLabelByStream(
      /* @ApiParam("Metadata document") */ @FormDataParam(Constants.PARAM_METADATA)
          InputStream metadataInputStream,
      /* @ApiParam("Feedback document") */ @FormDataParam(Constants.PARAM_FEEDBACK)
          InputStream feedbackInputStream)
      throws IOException {
    MetadataTransformer metadataTransformer = this.transformer.get();

    Label label = new Label();
    label.setMetadataUrl(new URL("http://not.available.for.direct.upload"));
    label.setFeedbackUrl(new URL("http://not.available.for.direct.upload"));

    PushbackInputStream tempStream;
    boolean hasData = false;
    if (metadataInputStream != null) {
      tempStream = new PushbackInputStream(metadataInputStream);
      int t = tempStream.read();
      if (t != -1) {
        tempStream.unread(t);
        log.debug("Reading from metadata stream...");
        metadataTransformer.updateGeoLabel(tempStream, label);
        hasData = true;
      } else tempStream.close();
    }
    if (feedbackInputStream != null) {
      tempStream = new PushbackInputStream(feedbackInputStream);
      int t = tempStream.read();
      if (t != -1) {
        tempStream.unread(t);
        log.debug("Reading from feedback stream...");
        metadataTransformer.updateGeoLabel(tempStream, label);
        hasData = true;
      } else tempStream.close();
    }

    if (!hasData)
      throw new WebApplicationException(
          Response.status(Response.Status.BAD_REQUEST)
              .type(MediaType.TEXT_PLAIN)
              .entity("No metadata or feedback file specified")
              .build());

    return label;
  }
 @Override
 public LineageFacet getAffectedFacet(Label label) {
   return label.getLineageFacet();
 }