import Foundation #if DEBUGextension CookieHeaderCache {    static func withDisplayStalenessIntervalOverrideForTesting<T>(        _ interval: TimeInterval?,        operation: () throws -> T) rethrows -> T    {        try self.$taskDisplayStalenessIntervalOverride.withValue(interval) {            try operation()        }    }     static func withDisplayStalenessIntervalOverrideForTesting<T>(        _ interval: TimeInterval?,        isolation _: isolated (any Actor)? = #isolation,        operation: () async throws -> T) async rethrows -> T    {        try await self.$taskDisplayStalenessIntervalOverride.withValue(interval) {            try await operation()        }    }     static func withDisplayUnavailableRetryIntervalOverrideForTesting<T>(        _ interval: TimeInterval?,        operation: () throws -> T) rethrows -> T    {        try self.$taskDisplayUnavailableRetryIntervalOverride.withValue(interval) {            try operation()        }    }     static func withDisplayUnavailableRetryIntervalOverrideForTesting<T>(        _ interval: TimeInterval?,        isolation _: isolated (any Actor)? = #isolation,        operation: () async throws -> T) async rethrows -> T    {        try await self.$taskDisplayUnavailableRetryIntervalOverride.withValue(interval) {            try await operation()        }    }}#endif