Get
constructor(cacheKeyPolicies: List<GetRegionBackendServiceCdnPolicyCacheKeyPolicy>, cacheMode: String, clientTtl: Int, defaultTtl: Int, maxTtl: Int, negativeCaching: Boolean, negativeCachingPolicies: List<GetRegionBackendServiceCdnPolicyNegativeCachingPolicy>, serveWhileStale: Int, signedUrlCacheMaxAgeSec: Int)