Add extern

Author: rishav-karanjit

TestVectors/dafny/DDBEncryption/src/JsonConfig.dfy

@@ -32,6 +32,7 @@ module {:options "-functionSyntax:4"} JsonConfig {
   import CreateInterceptedDDBClient
   import DynamoDbItemEncryptor
 
+  const {:extern "Utils.constants", "getDefaultKeys"} DEFAULT_KEYS : string
 
   predicate IsValidInt32(x: int)  { -0x8000_0000 <= x < 0x8000_0000}
   type ConfigName = string

TestVectors/runtimes/java/src/main/java/filepath/Constants.java

@@ -0,0 +1,7 @@
+package filepath;
+
+public class Constants {
+    public static dafny.DafnySequence<? extends Character> defaultKeys(){
+        return dafny.DafnySequence.asString("../../../submodules/MaterialProviders/TestVectorsAwsCryptographicMaterialProviders/dafny/TestVectorsAwsCryptographicMaterialProviders/test/keys.json");
+    }
+}