--- a/Plugin/Token.cpp	Thu Aug 31 16:51:15 2023 +0200
+++ b/Plugin/Token.cpp	Tue Sep 05 12:48:20 2023 +0200
@@ -32,4 +32,15 @@
       throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
     }
   }
+
+  Token::Token(const Token& other) :
+    type_(other.GetType()),
+    key_(other.GetKey())
+  {
+    if (key_.empty())
+    {
+      throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
+    }
+  }
+
 }