addBillingAddressMutation
Portion of the GraphQL query used in the addBillingAddress API endpoint
addBillingAddressMutation = "\n mutation addBillingAddress(
$version: Long!,
$actions: [MyCustomerUpdateAction!]!,
$storeKey: KeyReferenceInput
) {\n user: updateMyCustomer(version: $version,
actions: $actions,
storeKey: $storeKey) {\n ...DefaultCustomer\n }\n }\n"