### Question:
ConfigurationStore implements Serializable { public short getShort(String key, short defaultValue, String description, ItemConstraint constraint) throws NumberFormatException { Objects.requireNonNull(key, "key is null"); ConfigurationItem configItem = configurationItems.get(key); if (configItem == null) { setInt(key, defaultValue, description,constraint); return defaultValue; } else { return Short.parseShort(configItem.getValue()); } } ConfigurationStore(String newNamespace); static ConfigurationStore getStore(String namespace); static void saveConfiguration(); String getNamespace(); Map<String, ConfigurationItem> getConfigurationItems(); Set<String> getKeys(); boolean isEmpty(); boolean getBoolean(String key,
                            boolean defaultValue,
                            String description, ItemConstraint constraint); boolean getBoolean(String key, boolean defaultValue); void setBoolean(String key, boolean value, String description,
                         ItemConstraint constraint); void setBoolean(String key, boolean value); byte getByte(String key, byte defaultValue, String description,
                      ItemConstraint constraint); byte getByte(String key, byte defaultValue); void setByte(String key, byte value, String description,
                      ItemConstraint constraint); void setByte(String key, byte value); int getInt(String key, int defaultValue, String description,
                    ItemConstraint constraint); int getInt(String key, int defaultValue); void setInt(String key, int value, String description,
                     ItemConstraint constraint); void setInt(String key, int value); short getShort(String key, short defaultValue, String description,
                        ItemConstraint constraint); short getShort(String key, short defaultValue); void setShort(String key, short value, String description,
                       ItemConstraint constraint); void setShort(String key, short value); long getLong(String key, long defaultValue, String description,
                      ItemConstraint constraint); long getLong(String key, long defaultValue); void setLong(String key, long value, String description,
                      ItemConstraint constraint); void setLong(String key, long value); float getFloat(String key, float defaultValue, String description,
                        ItemConstraint constraint); float getFloat(String key, float defaultValue); void setFloat(String key, float value, String description,
                       ItemConstraint constraint); void setFloat(String key, float value); double getDouble(String key, double defaultValue,
                          String description,
                          ItemConstraint constraint); double getDouble(String key, double defaultValue); void setDouble(String key, double value, String description,
                        ItemConstraint constraint); void setDouble(String key, double value); String getString(String key, String defaultValue,
                          String description,ItemConstraint constraint); String getString(String key, String defaultValue); void setString(String key, String value, String description,
                        ItemConstraint constraint); void setString(String key, String value); String getEnum(String key,
                        String defaultValue,
                        String description,
                        Class<? extends Enum<?>> enumClass); String getEnum(String key,
                        String defaultValue,
                        Class<? extends Enum<?>> enumClass); void setEnum(String key, String value, String description,
                      Class<? extends Enum<?>> enumClass); void setEnum(String key, String value, String description,
                      Set<String> values); void setEnum(String key, String value,
                                  Class<? extends Enum<?>> enumClass); ConfigurationItem removeItem(String key);  }### Answer:
@Test public void testgetShort() { short value = 2; short result = store.getShort("testKeyshort", value); assertEquals(result, value); }