SKALE-3661 fix build

stubclient.h

@@ -187,6 +187,22 @@ class StubClient : public jsonrpc::Client
            throw jsonrpc::JsonRpcException(jsonrpc::Errors::ERROR_CLIENT_INVALID_RESPONSE, result.toStyledString());
         }
 
+        Json::Value createBLSPrivateKeyV2(const std::string& blsKeyName, const std::string& ethKeyName, const std::string& polyName, const std::string& SecretShare, int t, int n)
+        {
+          Json::Value p;
+          p["blsKeyName"] = blsKeyName;
+          p["ethKeyName"] = ethKeyName;
+          p["polyName"] = polyName;
+          p["secretShare"] = SecretShare;
+          p["n"] = n;
+          p["t"] = t;
+          Json::Value result = this->CallMethod("createBLSPrivateKeyV2",p);
+          if (result.isObject())
+           return result;
+          else
+           throw jsonrpc::JsonRpcException(jsonrpc::Errors::ERROR_CLIENT_INVALID_RESPONSE, result.toStyledString());
+        }
+
         Json::Value getBLSPublicKeyShare(const std::string & blsKeyName) 
         {
             Json::Value p;