readable = true;
            writable = true;
        }
    }

    @Override
    public boolean isReadable() {
        return readable;
    }

    @Override
    public boolean isWritable() {
        return writable;
    }

    @Override
    public <T> T getValue(final Object target) {
        assertArgumentNotNull("target", target);

        try {

                continue;
            }
            final PropertyDesc destPropertyDesc = destBeanDesc.getPropertyDesc(destPropertyName);
            if (!destPropertyDesc.isWritable()) {
                continue;
            }
            final Object value = srcPropertyDesc.getValue(src);
            if (!options.isTargetValue(value)) {
                continue;
            }

     */
    protected ConstructorDesc findSuitableConstructorDesc(final Object... args) {
        for (final ConstructorDesc constructorDesc : constructorDescs) {
            if (isSuitable(constructorDesc.getParameterTypes(), args, false)) {
                return constructorDesc;
            }
        }
        return null;
    }

    /**
     * 引数に適合する{@link ConstructorDesc}を返します。

        final String username = systemHelper.getUsername();
        runtime.registerData("username", username);
        runtime.registerData("editableUser", fessLoginAssist.getSavedUserBean().map(FessUserBean::isEditable).orElse(false));
        runtime.registerData("adminUser", fessConfig.isAdminUser(username) || fessLoginAssist.getSavedUserBean()