/**
     * 操作の対象に含めるプロパティ名を追加します。
     *
     * @param propertyNames
     *            プロパティ名の並び。{@literal null}や空配列であってはいけません
     * @return このインスタンス自身
     */
    public CopyOptions include(final CharSequence... propertyNames) {
        assertArgumentNotEmpty("propertyNames", propertyNames);

        includePropertyNames.addAll(toStringList(propertyNames));
        return this;
    }

    /**

        lastModified = propertiesFile.lastModified();
        prop.loadFromXML(in);
        properties = prop;
    }

    @Override
    public Enumeration<?> propertyNames() {
        return getProperties().propertyNames();
    }

    @Override
    public Object put(final Object key, final Object value) {
        return getProperties().put(key, value);
    }

    @Override

        substitute(sp, callback);
        sp.forEach(properties::setProperty);
    }

    public static void substitute(MavenProperties props, Function<String, String> callback) {
        for (Enumeration<?> e = props.propertyNames(); e.hasMoreElements(); ) {
            String name = (String) e.nextElement();
            String value = props.getProperty(name);
            if (value == null) {
                value = callback.apply(name);

    properties: Optional[Dict[str, "SchemaOrBool"]] = None
    patternProperties: Optional[Dict[str, "SchemaOrBool"]] = None
    additionalProperties: Optional["SchemaOrBool"] = None
    propertyNames: Optional["SchemaOrBool"] = None
    unevaluatedItems: Optional["SchemaOrBool"] = None
    unevaluatedProperties: Optional["SchemaOrBool"] = None

     *
     * @return an enumeration of all the keys in this property list, including the keys in the default property list.
     */
    public Enumeration<?> propertyNames() {
        return Collections.enumeration(storage.keySet());
    }

    /**
     * Calls the map method put. Provided for parallelism with the getProperty method.

    ImmutableMap.Builder<String, String> builder = ImmutableMap.builder();

    for (Enumeration<?> e = properties.propertyNames(); e.hasMoreElements(); ) {
      /*
       * requireNonNull is safe because propertyNames contains only non-null elements.
       *
       * Accordingly, we have it annotated as returning `Enumeration<? extends Object>` in our

    ImmutableMap.Builder<String, String> builder = ImmutableMap.builder();

    for (Enumeration<?> e = properties.propertyNames(); e.hasMoreElements(); ) {
      /*
       * requireNonNull is safe because propertyNames contains only non-null elements.
       *
       * Accordingly, we have it annotated as returning `Enumeration<? extends Object>` in our

        return __modifiedProperties.getPropertyNames();
    }

    public void mymodifyProperty(String propertyName) {
        registerModifiedProperty(propertyName);
    }

    public void mymodifyPropertyCancel(String propertyName) {
        __modifiedProperties.remove(propertyName);
    }

    public void clearModifiedInfo() {
        __modifiedProperties.clear();
    }

        return __modifiedProperties.getPropertyNames();
    }

    public void mymodifyProperty(String propertyName) {
        registerModifiedProperty(propertyName);
    }

    public void mymodifyPropertyCancel(String propertyName) {
        __modifiedProperties.remove(propertyName);
    }

    public void clearModifiedInfo() {
        __modifiedProperties.clear();
    }

    private final String propertyName;

    /**
     * {@link IllegalPropertyRuntimeException}を作成します。
     *
     * @param targetClass
     *            ターゲットクラス
     * @param propertyName
     *            プロパティ名
     * @param cause
     *            原因となった例外
     */
    public IllegalPropertyRuntimeException(final Class<?> targetClass, final String propertyName, final Throwable cause) {