chore!: do not expose the TD ID via AugmentedForms

example/complex_example.dart

@@ -75,18 +75,23 @@ const thingDescriptionJson = {
   },
 };
 
-final Map<String, BasicCredentials> basicCredentials = {
-  "urn:test": const BasicCredentials("username", "password"),
+final Map<Uri, BasicCredentials> basicCredentials = {
+  Uri.parse("https://httpbin.org"):
+      const BasicCredentials("username", "password"),
 };
 
 Future<BasicCredentials?> basicCredentialsCallback(
   Uri uri,
-  AugmentedForm? form, [
+  AugmentedForm? form,
   BasicCredentials? invalidCredentials,
-]) async {
-  final id = form?.tdIdentifier;
+) async {
+  final href = Uri(
+    scheme: uri.scheme,
+    host: uri.host,
+    port: uri.port,
+  );
 
-  return basicCredentials[id];
+  return basicCredentials[href];
 }
 
 Future<void> main() async {

example/http_basic_authentication.dart

@@ -37,8 +37,8 @@ const thingDescriptionJson = {
 
 const basicCredentials = BasicCredentials("username", "password");
 
-final Map<String, BasicCredentials> basicCredentialsMap = {
-  "urn:test": basicCredentials,
+final Map<Uri, BasicCredentials> basicCredentialsMap = {
+  Uri.parse("https://httpbin.org"): basicCredentials,
 };
 
 Future<BasicCredentials?> basicCredentialsCallback(
@@ -50,9 +50,13 @@ Future<BasicCredentials?> basicCredentialsCallback(
     return basicCredentials;
   }
 
-  final id = form.tdIdentifier;
+  final href = Uri(
+    scheme: uri.scheme,
+    host: uri.host,
+    port: uri.port,
+  );
 
-  return basicCredentialsMap[id];
+  return basicCredentialsMap[href];
 }
 
 /// Illustrates the usage of both the basic and the automatic security scheme,

example/mqtt_example.dart

@@ -45,18 +45,25 @@ const thingDescriptionJson = {
   },
 };
 
-final Map<String, BasicCredentials> basicCredentials = {
-  "urn:test": const BasicCredentials("rw", "readwrite"),
+final Map<Uri, BasicCredentials> basicCredentials = {
+  Uri.parse("mqtt://test.mosquitto.org:1884"): const BasicCredentials(
+    "rw",
+    "readwrite",
+  ),
 };
 
 Future<BasicCredentials?> basicCredentialsCallback(
   Uri uri,
   AugmentedForm? form, [
   BasicCredentials? invalidCredentials,
 ]) async {
-  final id = form?.tdIdentifier;
+  final href = Uri(
+    scheme: uri.scheme,
+    host: uri.host,
+    port: uri.port,
+  );
 
-  return basicCredentials[id];
+  return basicCredentials[href];
 }
 
 Future<void> main(List<String> args) async {

lib/src/binding_mqtt/mqtt_extensions.dart

@@ -140,8 +140,7 @@ extension MqttFormExtension on AugmentedForm {
     if (qosValue != null) {
       throw FormatException(
         "Encountered unknown QoS value $qosValue. "
-        "in form with href $href of Thing Description with Identifier "
-        "$tdIdentifier.",
+        "in form with resolved href $resolvedHref.",
       );
     }
 

lib/src/core/implementation/augmented_form.dart

@@ -31,9 +31,6 @@ final class AugmentedForm implements Form {
 
   final Map<String, Object>? _userProvidedUriVariables;
 
-  /// The identifier of the [_thingDescription] associated with this form.
-  String get tdIdentifier => _thingDescription.identifier;
-
   @override
   Map<String, dynamic> get additionalFields => _form.additionalFields;
 

test/core/augmented_form_test.dart

@@ -63,7 +63,6 @@ void main() {
       expect(augmentedForm.href, Uri.parse(href));
       expect(augmentedForm.security, ["nosec_sc"]);
       expect(augmentedForm.securityDefinitions.first, isA<NoSecurityScheme>());
-      expect(augmentedForm.tdIdentifier, id);
       expect(
         augmentedForm.additionalResponses?.first.contentType,
         "application/json",