Bug 255172 [Import/Export] Warning message in the import wizard is not so helpful
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/WizardProjectsImportPage.java
IOverwriteQuery {
	/**
	 * The name of the folder containing metadata information for the workspace.
	 */
	public static final String METADATA_FOLDER = ".metadata"; 
	/**
	 * The import structure provider.
	 * 
	 * @since 3.4
	 */
	private ILeveledImportStructureProvider structureProvider;
	/**
	 * Class declared public only for test suite.
	 * 
	 */
	public class ProjectRecord {
		File projectSystemFile;
		Object projectArchiveFile;