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

    public static void substitute(MavenProperties props, UnaryOperator<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);

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

    public static void substitute(MavenProperties props, UnaryOperator<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);

        super("ECL0097", asArray(propertyName, value, cause), cause);
        this.propertyName = propertyName;
        this.value = value;
    }

    /**
     * Returns the property name.
     *
     * @return Property name
     */
    public String getPropertyName() {
        return propertyName;
    }

    /**

    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;

        super("ECL0059", asArray(targetClass.getName(), propertyName, cause), cause);
        this.targetClass = targetClass;
        this.propertyName = propertyName;
    }

    /**
     * Returns the target class.
     *
     * @return Target class
     */
    public Class<?> getTargetClass() {
        return targetClass;
    }

    /**

     */
    private final String propertyName;

    /**
     * Returns a {@link PropertyNotFoundRuntimeException}.
     *
     * @param targetClass the target class
     * @param propertyName the property name
     */
    public PropertyNotFoundRuntimeException(final Class<?> targetClass, final String propertyName) {
        super("ECL0065", asArray(targetClass.getName(), propertyName));
        this.targetClass = targetClass;

        .that(annotationClass.getAnnotation(Inherited.class))
        .isNotNull();

    for (String propertyName : new String[] {"value", "absent"}) {
      Method method = null;
      try {
        method = annotationClass.getMethod(propertyName);
      } catch (NoSuchMethodException e) {
        throw new AssertionError("Annotation is missing required method", e);
      }

        .that(annotationClass.getAnnotation(Inherited.class))
        .isNotNull();

    for (String propertyName : new String[] {"value", "absent"}) {
      Method method = null;
      try {
        method = annotationClass.getMethod(propertyName);
      } catch (NoSuchMethodException e) {
        throw new AssertionError("Annotation is missing required method", e);
      }

                    + propertyName(callingMethod)
                    + "' has not been initialized.\n"
                    + "Perhaps the plugin responsible for initializing this property has not been applied."
            );
        }

        return object;
    }

    private static String propertyName(String methodName) {

     * Returns whether the {@link PropertyDesc} exists.
     *
     * @param propertyName
     *            The property name. Must not be {@literal null} or empty string
     * @return Whether the {@link PropertyDesc} exists
     */
    boolean hasPropertyDesc(String propertyName);

    /**
     * Returns the {@link PropertyDesc}.
     *
     * @param propertyName
     *            The property name. Must not be {@literal null} or empty string