BackendServiceCdnPolicyNegativeCachingPolicy typedef
        
  
BackendServiceCdnPolicyNegativeCachingPolicy = $CdnPolicyNegativeCachingPolicy
    
    
Specify CDN TTLs for response error codes.
Implementation
typedef BackendServiceCdnPolicyNegativeCachingPolicy =
    $CdnPolicyNegativeCachingPolicy;