// X509
using X509Deleter = folly::static_function_deleter<X509, &X509_free>;
using X509UniquePtr = std::unique_ptr<X509, X509Deleter>;
+using X509ExtensionDeleter =
+ folly::static_function_deleter<X509_EXTENSION, &X509_EXTENSION_free>;
+using X509ExtensionUniquePtr =
+ std::unique_ptr<X509_EXTENSION, X509ExtensionDeleter>;
using X509StoreDeleter =
folly::static_function_deleter<X509_STORE, &X509_STORE_free>;
using X509StoreUniquePtr = std::unique_ptr<X509_STORE, X509StoreDeleter>;