 
         // Cache expiration
         self.cacheExpiration = try cors.extract("cacheExpiration") ?? 600
-
+        
         // Exposed headers
         self.exposedHeaders = try cors.extract("exposedHeaders")
     }

import HTTP

/// Option for the allow origin header in responses for CORS requests.
///


    /// Uses custom string provided as an associated value.
    case custom(String)

    /// Creates the header string depending on the case of self.
    ///
