---
title: "configuredWith(configuration:group:body:)"
framework: cloudkit
role: symbol
role_heading: Instance Method
path: "cloudkit/ckcontainer/configuredwith(configuration:group:body:)-40x6k"
---

# configuredWith(configuration:group:body:)

Applies a temporary configuration to the container within the scope of a closure.

## Declaration

```swift
@discardableResult func configuredWith<R>(configuration: CKOperation.Configuration? = nil, group: CKOperationGroup? = nil, body: (CKContainer) throws -> R) rethrows -> R
```

## Parameters

- `configuration`: An interim configuration to apply to the current container.
- `group`: The group to associate with the methods you execute in the closure. Specifying a group helps the system prioritize those method calls, and helps you identify the calls in the server logs in CloudKit Console. For more information, see doc://com.apple.cloudkit/documentation/CloudKit/CKOperationGroup.
- `body`: The closure to execute with the temporarily configured container.

## Discussion

Discussion Use this method to apply a specific configuration to the current container that lasts only for the duration of the trailing closure. For example, you might want to temporarily elevate the quality of service (QoS) for a group of method calls, or allow one or more expensive method calls to execute only while the device is using WiFi. func fetchShareParticipants(     with phoneNumbers: [String],     completionHandler: @escaping (         Result<[String : Result<CKShare.Participant, any Error>], any Error>     ) -> Void ) {

// Get a reference to the app's container.     let container = CKContainer.default()

// Create a configuration that denies cellular access.     let config = CKOperation.Configuration()     config.allowsCellularAccess = false

// Configure the container and execute an expensive fetch.     container.configuredWith(configuration: config) { container in         container.fetchShareParticipants(forPhoneNumbers: phoneNumbers, completionHandler: completionHandler)     } }