@Override
 protected boolean processResources() {
   if (domain != null) {
     for (URI uri : getURIs()) {
       try {
         if (!processResource(domain.getResourceSet().getResource(uri, true))) {
           return false;
         }
       } catch (RuntimeException exception) {
         EMFEditUIPlugin.INSTANCE.log(exception);
       }
     }
   }
   return true;
 }
  /**
   * Creates and, if it already exists, loads the specified resource. This implementation verifies
   * that a resource can be opened for that URI, that the resource is not the object's current
   * container, and that it is not read-only in the editing domain. If there is an existing resource
   * with that URI, it prompts before overriding or adding to it.
   *
   * @see org.eclipse.emf.common.ui.dialogs.ResourceDialog#processResources()
   */
  protected boolean processResources() {
    URI uri = URI.createURI(getURIText());
    ResourceSet resourceSet = domain.getResourceSet();
    Resource resource = resourceSet.getResource(uri, false);
    boolean resourceInSet = resource != null;

    if (resource == currentResource) {
      MessageDialog.openError(
          getShell(),
          EMFEditUIPlugin.INSTANCE.getString("_UI_InvalidURI_label"),
          EMFEditUIPlugin.INSTANCE.getString("_WARN_AlreadyInResource"));
      return false;
    }
    if (domain.isReadOnly(resource)) {
      MessageDialog.openError(
          getShell(),
          EMFEditUIPlugin.INSTANCE.getString("_UI_InvalidURI_label"),
          EMFEditUIPlugin.INSTANCE.getString("_WARN_ReadOnlyResource"));
      return false;
    }

    boolean resourceExists = false;
    try {
      InputStream stream = resourceSet.getURIConverter().createInputStream(uri);
      if (stream != null) {
        resourceExists = true;
        stream.close();
      }
    } catch (IOException exception) {
      // Do nothing
    }

    boolean resourceBad = false;
    if (!resourceInSet) {
      resource = resourceSet.createResource(uri);
      if (resource == null) {
        MessageDialog.openError(
            getShell(),
            EMFEditUIPlugin.INSTANCE.getString("_UI_InvalidURI_label"),
            EMFEditUIPlugin.INSTANCE.getString("_WARN_CannotCreateResource"));
        return false;
      }

      if (resourceExists) {
        try {
          resource = resourceSet.getResource(uri, true);
        } catch (RuntimeException exception) {
          EMFEditUIPlugin.INSTANCE.log(exception);
          resourceBad = resource.getContents().isEmpty();
        }
      }
    }

    boolean result = true;
    if (resourceBad) {
      result =
          MessageDialog.openQuestion(
              getShell(),
              EMFEditUIPlugin.INSTANCE.getString("_UI_ExistingResource_label"),
              EMFEditUIPlugin.INSTANCE.getString("_WARN_ReplaceResource"));
    } else if (resourceExists) {
      result =
          MessageDialog.openQuestion(
              getShell(),
              EMFEditUIPlugin.INSTANCE.getString("_UI_ExistingResource_label"),
              EMFEditUIPlugin.INSTANCE.getString("_WARN_AddToResource"));
    }

    if (!result && !resourceInSet) {
      resource.unload();
      resourceSet.getResources().remove(resource);
    } else {
      this.controlResource = resource;
    }
    return result;
  }