Bug 279452 [Compatibility] Parameterized command mechanism support
Parameterized commands like showView need to be able to access their parameters (like the view ID) PW
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/workbench/HandlerTest.java
private static final String HELP_COMMAND_ID = "org.eclipse.ui.commands.help";
	private static final String HELP_COMMAND1_ID = HELP_COMMAND_ID + "1";
	public static class TestHandler {
		boolean ran = false;
		boolean canRun;
		String rc;
		public TestHandler(boolean c, String ret) {
			canRun = c;
			rc = ret;
		}
		public boolean canExecute() {
			return canRun;
		}
		public Object execute() {
			ran = true;
			return rc;
		}
	}
	public void testOneCommand() throws Exception {
		IEclipseContext appContext = createGlobalContext();