How to get cardVaultUrl

[RuchiMakadia]

I am currently using 3.7.0 SDK, I am stuck in API cardClient.vault.

I am trying to get token from below code as per mention in the document

 let settings: Storefront.PaymentSettings
        let cardClient: Card.Client = Card.Client()

        let task = cardClient.vault(creditCard, to: settings.cardVaultUrl) { (token, error) in
            token
        } 

getting error when in code settings.cardVaultUrl

Constant 'settings' used before being initialized

I find it to write like

Storefront.PaymentSettings()

something like

Card.Client()

but not work please help me Where am I supposed to get that URL from? Thank in advance.

[dbart01]

The GraphQL query you're looking for is this:

{
  shop {
    paymentSettings {
      cardVaultUrl
    }
  }
}

[RuchiMakadia]

Thank you