Bug 321995 Application-Context should hold Display-Realm
The application context should hold the databinding realm for the current SWT-Display it can then be used to by code to synchronize with the UI-Thread in a widget-toolkit agnostic way.
bundles/org.eclipse.e4.ui.workbench.swt/src/org/eclipse/e4/ui/internal/workbench/swt/E4Application.java
* @param create
	 *            If the directory and file does not exist this parameter
	 *            controls whether it will be created.
	 * @return An url to the file or null if the version file does not exist or
	 *         could not be created.
	 */
	private static File getVersionFile(URL workspaceUrl, boolean create) {
		if (workspaceUrl == null) {
			return null;
		}
		try {
			
			File metaDir = new File(workspaceUrl.getPath(), METADATA_FOLDER);
			if (!metaDir.exists() && (!create || !metaDir.mkdir())) {
				return null;
			}
			
			File versionFile = new File(metaDir, VERSION_FILENAME);
			if (!versionFile.exists()
					&& (!create || !versionFile.createNewFile())) {
				return null;
			}
			return versionFile;
		} catch (IOException e) {
			
			return null;
		}
	}
}