TypedProperties { public void remove(String key) { _storage.remove(key); }  Object get(String key); Set<String> keySet(); void load(Reader reader); void put(String key, Object value); void remove(String key); void save(Writer writer);  }
@Test public void testRemove() throws IOException { TypedProperties typedProperties = _createTypedProperties( "testKey = \"testValue\""); Assert.assertEquals("testValue", typedProperties.get("testKey")); typedProperties.remove("testKey"); Assert.assertEquals(null, typedProperties.get("testKey")); }