can any one know about config & deps in checkout like below code -

<item name="config" xsi:type="array">
      <item name="deps" xsi:type="array">
            <item name="0" xsi:type="string">checkout.steps.shipping-step.shippingAddress</item>
                  <item name="1" xsi:type="string">checkout.steps.billing-step.payment</item>
      </item>
</item>