### Question:
Config implements Serializable { public void setProperty(String key, String value) { properties.setProperty(key, value); }  String getXmlFile(); @XmlTransient void setXmlFile(File file); void setXmlFile(String name); void setProperty(String key, String value); String getProperty(String key); Tuples getTuples(); Set<Entry<Object, Object>> entrySet(); void put(Object key, Object value); String getStringProperty(String key, String defaultValue); int getIntProperty(String key, int defaultValue); boolean getBooleanProperty(String key, boolean defaultValue); double getDoubleProperty(String key, double defaultValue); ArrayList<URL> getUrlListProperty(String key); ArrayList<String> getPathListProperty(String key); Properties getProperties(); @Override String toString();  }### Answer:
@Test public void testSetProperty() { }