public final static boolean isEnd(String commandPart) {
		return commandPart.length() == 1 && commandPart.charAt(0) == 'e';
	}
@Test
	public void testEnd() {
		assertTrue(Protocol.isEnd("e"));
		assertFalse(Protocol.isEnd(""));
		assertFalse(Protocol.isEnd("btrue"));
		try {
			Protocol.isEnd(null);
			fail();
		} catch (NullPointerException e) {
			assertTrue(true);
		}
	}