private static final long serialVersionUID = 5220902071756706607L;

    /**
     * The target class.
     */
    private final Class<?> targetClass;

    /**
     * Creates a {@link InstantiationRuntimeException}.
     *
     * @param targetClass
     *            Target class
     * @param cause
     *            The cause of the exception
     */

    /**
     * The target class.
     */
    private final Class<?> targetClass;

    /**
     * The name of the property.
     */
    private final String propertyName;

    /**
     * Creates a {@link IllegalPropertyRuntimeException}.
     *
     * @param targetClass
     *            Target class
     * @param propertyName
     *            Property name

    /**
     * The target class.
     */
    private final Class<?> targetClass;

    /**
     * The name of the field.
     */
    private final String fieldName;

    /**
     * Creates a {@link FieldNotStaticRuntimeException}.
     *
     * @param targetClass
     *            Target class
     * @param fieldName
     *            Field name
     */

    /**
     * The target class.
     */
    private final Class<?> targetClass;

    /**
     * The name of the method.
     */
    private final String methodName;

    /**
     * Creates a {@link MethodNotStaticRuntimeException}.
     *
     * @param targetClass
     *            Target class
     * @param methodName
     *            Method name
     */

    /**
     * The target class.
     */
    private final Class<?> targetClass;

    /**
     * The name of the field.
     */
    private final String fieldName;

    /**
     * Creates a {@link NoSuchFieldRuntimeException}.
     *
     * @param targetClass
     *            Target class
     * @param fieldName
     *            Field name
     * @param cause

     * Adds a conversion rule.
     *
     * @param target The target string.
     * @param replacement The replacement string.
     */
    public void add(final String target, final String replacement) {
        if (target == null || replacement == null) {
            throw new CrawlerSystemException("Target or replacement cannot be null.");
        }
        convertMap.put(target, replacement);
    }

    /**

                    }
                }
            }
        }

        if (dr == null && path != null) {
            /* We did not match a domain based root. Now try to match the
             * longest path in the list of stand-alone referrals.
             */
            if (referrals != null && now > referrals.expiration) {
                referrals = null;
            }
            if (referrals == null) {

    /**
     * The target class.
     */
    private final Class<?> targetClass;

    /**
     * The parameter types.
     */
    private final Class<?>[] argTypes;

    /**
     * Creates a {@link NoSuchConstructorRuntimeException}.
     *
     * @param targetClass
     *            Target class
     * @param argTypes
     *            Array of parameter types

     * Returns the value of the {@link Field}.
     *
     * @param <T>
     *            the type of the field
     * @param target
     *            the target object. Must not be {@literal null}
     * @return the value of the {@link Field}
     */
    <T> T getFieldValue(Object target);

    /**
     * Returns the value of the static {@link Field}.
     *
     * @param <T>

     *
     * @param <T>
     *            the property type
     * @param target
     *            the target object. Must not be {@literal null}
     * @return the property value
     */
    <T> T getValue(Object target);

    /**
     * Sets the value of the property.
     *
     * @param target
     *            the target object. Must not be {@literal null}
     * @param value