I need to customized knowledge render from transport methodology render.
I’ve modified information(template on this file js):

Magento_Checkout/js/view/cart/shipping-rates.js

getSubfixLabel: perform(){

            var label =  window.checkout.estimate_label_subfix;

            return label;
        },

Magento_Checkout/template/shipping-rates.html

<!--
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license particulars.
 */
-->
<type id="co-shipping-method-form" data-bind="blockLoader: isLoading, seen: isVisible()" >
    <p class="area word" data-bind="seen: (!isLoading() && shippingRates().size <= 0)">
        <!-- ko textual content: $t('Sorry, no quotes can be found for this order at the moment')--><!-- /ko -->
    </p>
    <fieldset class="fieldset fee" data-bind="seen: (shippingRates().size > 0)">
        <dl class="objects strategies" data-bind="foreach: shippingRateGroups" >
            <dd class="item-options" data-bind="foreach: { knowledge:$guardian.getRatesForGroup($knowledge), as: 'methodology' }" afterRender="$guardian.showEstimateLabelAfterRender">
                <div data-bind="css: {'area alternative merchandise': accessible, 'message error': !accessible} ">
                    <!-- ko ifnot: (accessible) -->
                    <div data-bind="textual content: error_message"></div>
                    <!-- /ko -->
                    <!-- ko if: (accessible) -->
                    <enter sort="radio"
                           class="radio"
                           data-bind="
                                click on: $dad and mom[1].selectShippingMethod,
                                checked: $dad and mom[1].selectedShippingMethod,
                                attr: {
                                        worth: carrier_code + '_' + method_code,
                                        id: 's_method_' + carrier_code + '_' + method_code
                                        }
                                "/>
                    <label class="label" data-bind="attr: {for: 's_method_' + carrier_code + '_' + method_code}">
                        <!-- ko textual content: $knowledge.method_title --><!-- /ko -->
                        <every args="factor.getRegion('value')" render="" />
                        <div data-bind="html: getSubfixLabel"></div>
                    </label>
                    <!-- /ko -->
                    <div class="estimate_shipping no-display" data-bind="attr: {id: 'label_carrier_' + method_code + '_' + carrier_code}">
                        <!-- ko textual content: $knowledge.carrier_title --><!-- /ko -->
                    </div>
                </div>
            </dd>
        </dl>
    </fieldset>
</type>

I need to get knowledge from perform getSubfixLabel and render by html. Nevertheless, it is displaying this perform undefined.

ReferenceError: estimate_label_subfix isn't outlined

Anybody may help me out this points?