### Question:
SpaceLet extends QBeanSupport implements Space { public void startService() { NameRegistrar.register (uri, this); Iterator iter = getPersist().getChildren("run").iterator(); while (iter.hasNext ()) launch ((Element) iter.next ()); }  void initService(); void startService(); void stopService(); void out(Object key, Object value); void out(Object key, Object value, long timeout); void push(Object key, Object value); void push(Object key, Object value, long timeout); void put(Object key, Object value); void put(Object key, Object value, long timeout); Object in(Object key); Object rd(Object key); Object in(Object key, long timeout); Object rd(Object key, long timeout); Object inp(Object key); Object rdp(Object key); boolean existAny(Object[] keys); boolean existAny(Object[] keys, long timeout); void nrd(Object key); Object nrd(Object key, long timeout);  }### Answer:
@Test public void testStartServiceThrowsNullPointerException() throws Throwable { SpaceLet spaceLet = new SpaceLet(); try { spaceLet.startService(); fail("Expected NullPointerException to be thrown"); } catch (NullPointerException ex) { } }