private void validateUnpack(Element parent) {
    int severity = CompilerFlags.getFlag(fProject, CompilerFlags.F_UNRESOLVED_PLUGINS);
    if (severity == CompilerFlags.IGNORE) {
      return;
    }
    if (severity == CompilerFlags.ERROR) {
      // this might not be an error, so max the flag at WARNING level.
      severity = CompilerFlags.WARNING;
    }
    String unpack = parent.getAttribute("unpack"); // $NON-NLS-1$
    IMonitorModelBase pModel = MonitorRegistry.findModel(parent.getAttribute("id")); // $NON-NLS-1$
    if (pModel == null) {
      return;
    }

    if (pModel instanceof IBundlePluginModel) {
      IBundlePluginModel bModel = (IBundlePluginModel) pModel;
      IManifestHeader header =
          bModel
              .getBundleModel()
              .getBundle()
              .getManifestHeader(ICoreConstants.ECLIPSE_BUNDLE_SHAPE);
      if (header != null) {
        String value = header.getValue();
        String unpackValue =
            "true".equals(unpack) ? "jar" : "dir"; // $NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
        if (value != null && !value.equalsIgnoreCase(unpackValue)) {
          String message =
              NLS.bind(
                  MDECoreMessages.Builders_Feature_mismatchUnpackBundleShape,
                  (new String[] {
                    "unpack=" + unpack, parent.getAttribute("id"), "Eclipse-BundleShape: " + value
                  })); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
          report(message, getLine(parent), severity, MDEMarkerFactory.CAT_OTHER);
        }
      }
    }

    if ("true".equals(unpack)
        && !CoreUtility.guessUnpack(pModel.getBundleDescription())) { // $NON-NLS-1$
      String message =
          NLS.bind(
              MDECoreMessages.Builders_Feature_missingUnpackFalse,
              (new String[] {
                parent.getAttribute("id"), "unpack=\"false\""
              })); //$NON-NLS-1$ //$NON-NLS-2$
      report(message, getLine(parent), severity, MDEMarkerFactory.CAT_OTHER);
    }
  }
  protected void validateJavaAttribute(Element element, Attr attr) {
    String value = attr.getValue();
    IJavaProject javaProject = JavaCore.create(fFile.getProject());

    // be careful: people have the option to use the format:
    // fullqualifiedName:staticMethod
    int index = value.indexOf(":"); // $NON-NLS-1$
    if (index != -1) value = value.substring(0, index);

    // assume we're on the classpath already
    boolean onClasspath = true;
    int severity = CompilerFlags.getFlag(fProject, CompilerFlags.P_UNKNOWN_CLASS);
    if (severity != CompilerFlags.IGNORE && javaProject.isOpen()) {
      onClasspath = PDEJavaHelper.isOnClasspath(value, javaProject);
      if (!onClasspath) {
        report(
            NLS.bind(
                MDECoreMessages.Builders_Manifest_class, (new String[] {value, attr.getName()})),
            getLine(element, attr.getName()),
            severity,
            MDEMarkerFactory.P_UNKNOWN_CLASS,
            element,
            attr.getName() + F_ATT_VALUE_PREFIX + attr.getValue(),
            MDEMarkerFactory.CAT_FATAL);
      }
    }

    severity = CompilerFlags.getFlag(fProject, CompilerFlags.P_DISCOURAGED_CLASS);
    if (severity != CompilerFlags.IGNORE && javaProject.isOpen()) {
      BundleDescription desc = fModel.getBundleDescription();
      if (desc == null) return;
      // only check if we're discouraged if there is something on the classpath
      if (onClasspath && PDEJavaHelper.isDiscouraged(value, javaProject, desc)) {
        report(
            NLS.bind(
                MDECoreMessages.Builders_Manifest_discouragedClass,
                (new String[] {value, attr.getName()})),
            getLine(element, attr.getName()),
            severity,
            MDEMarkerFactory.M_DISCOURAGED_CLASS,
            element,
            attr.getName() + F_ATT_VALUE_PREFIX + attr.getValue(),
            MDEMarkerFactory.CAT_OTHER);
      }
    }
  }