return __modifiedProperties.getPropertyNames();
    }

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

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

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

fun Project.gradleProperty(propertyName: String) = providers.gradleProperty(propertyName)


fun Project.systemProperty(propertyName: String) = providers.systemProperty(propertyName)


fun Project.environmentVariable(propertyName: String) = providers.environmentVariable(propertyName)


fun Project.propertyFromAnySource(propertyName: String) = gradleProperty(propertyName)
    .orElse(systemProperty(propertyName))

    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) {

        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 Class<?> targetClass;

    private final String propertyName;

    /**
     * {@link PropertyNotFoundRuntimeException}を返します。
     *
     * @param targetClass
     *            ターゲットクラス
     * @param propertyName
     *            プロパティ名
     */
    public PropertyNotFoundRuntimeException(final Class<?> targetClass, final String propertyName) {
        super("ECL0065", asArray(targetClass.getName(), propertyName));

    public PropertyDescImpl(final String propertyName, final Class<?> propertyType, final Method readMethod, final Method writeMethod,
            final Field field, final BeanDesc beanDesc) {
        assertArgumentNotEmpty("propertyName", propertyName);
        assertArgumentNotNull("propertyType", propertyType);
        assertArgumentNotNull("beanDesc", beanDesc);

        this.propertyName = propertyName;
        this.propertyType = propertyType;

        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 List<ReplacedAccessor> replacedAccessors;

    public UpgradedProperty(String containingType, String propertyName, String methodName, String methodDescriptor, List<ReplacedAccessor> replacedAccessors) {
        this.containingType = containingType;
        this.propertyName = propertyName;
        this.methodName = methodName;
        this.methodDescriptor = methodDescriptor;

    }

    @Override
    public boolean hasPropertyDesc(final String propertyName) {
        assertArgumentNotEmpty("propertyName", propertyName);

        return propertyDescCache.get(propertyName) != null;
    }

    @Override
    public PropertyDesc getPropertyDesc(final String propertyName) {
        assertArgumentNotEmpty("propertyName", propertyName);

        final PropertyDesc pd = propertyDescCache.get(propertyName);

    }

    private static class PropertyLinkMetaData extends MethodLinkMetaData {
        private final String propertyName;

        private PropertyLinkMetaData(String propertyName, String methodName, String signature) {
            super(methodName, signature, LinkMetaData.Style.Dsldoc);
            this.propertyName = propertyName;
        }

        @Override
        public String getUrlFragment(String className) {