systemPropertyQueried(key, oldValue, consumer);
        listener().systemPropertyChanged(key, value, consumer);
        return oldValue;
    }

    // Called by generated code.
    public static String clearSystemProperty(String key, String consumer) {
        String oldValue = System.clearProperty(key);
        systemPropertyQueried(key, oldValue, consumer);
        listener().systemPropertyRemoved(key, consumer);

                } else if (name.equals("clearProperty") && descriptor.equals(RETURN_STRING_FROM_STRING)) {
                    _LDC(binaryClassNameOf(className));
                    _INVOKESTATIC(INSTRUMENTED_TYPE, "clearSystemProperty", RETURN_STRING_FROM_STRING_STRING);
                    return true;
                } else if (name.equals("getenv")) {
                    if (descriptor.equals(RETURN_STRING_FROM_STRING)) {