diff --git a/modules/openapi-generator/src/main/resources/dart/libraries/dio/api_client.mustache b/modules/openapi-generator/src/main/resources/dart/libraries/dio/api_client.mustache
index d0cc2dfb2096..edbe692d4cc3 100644
--- a/modules/openapi-generator/src/main/resources/dart/libraries/dio/api_client.mustache
+++ b/modules/openapi-generator/src/main/resources/dart/libraries/dio/api_client.mustache
@@ -46,22 +46,62 @@ class {{clientName}} {
     }
   }
 
+  /// Removes the OAuth token associated with the given [name].
+  ///
+  /// If no [OAuthInterceptor] is registered or no token exists for the given
+  /// [name], this method has no effect.
+  void removeOAuthToken(String name) {
+    if (this.dio.interceptors.any((i) => i is OAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is OAuthInterceptor) as OAuthInterceptor).tokens.remove(name);
+    }
+  }
+
   void setBearerAuth(String name, String token) {
     if (this.dio.interceptors.any((i) => i is BearerAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((i) => i is BearerAuthInterceptor) as BearerAuthInterceptor).tokens[name] = token;
     }
   }
 
+  /// Removes the bearer authentication token associated with the given [name].
+  ///
+  /// If no [BearerAuthInterceptor] is registered or no token exists for the
+  /// given [name], this method has no effect.
+  void removeBearerAuth(String name) {
+    if (this.dio.interceptors.any((i) => i is BearerAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is BearerAuthInterceptor) as BearerAuthInterceptor).tokens.remove(name);
+    }
+  }
+
   void setBasicAuth(String name, String username, String password) {
     if (this.dio.interceptors.any((i) => i is BasicAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((i) => i is BasicAuthInterceptor) as BasicAuthInterceptor).authInfo[name] = BasicAuthInfo(username, password);
     }
   }
 
+  /// Removes the basic authentication credentials associated with the given [name].
+  ///
+  /// If no [BasicAuthInterceptor] is registered or no credentials exist for the
+  /// given [name], this method has no effect.
+  void removeBasicAuth(String name) {
+    if (this.dio.interceptors.any((i) => i is BasicAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is BasicAuthInterceptor) as BasicAuthInterceptor).authInfo.remove(name);
+    }
+  }
+
   void setApiKey(String name, String apiKey) {
     if (this.dio.interceptors.any((i) => i is ApiKeyAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((element) => element is ApiKeyAuthInterceptor) as ApiKeyAuthInterceptor).apiKeys[name] = apiKey;
     }
+  }
+
+  /// Removes the API key associated with the given [name].
+  ///
+  /// If no [ApiKeyAuthInterceptor] is registered or no API key exists for the
+  /// given [name], this method has no effect.
+  void removeApiKey(String name) {
+    if (this.dio.interceptors.any((i) => i is ApiKeyAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((element) => element is ApiKeyAuthInterceptor) as ApiKeyAuthInterceptor).apiKeys.remove(name);
+    }
   }{{#apiInfo}}{{#apis}}
 
   /// Get {{classname}} instance, base route and serializer can be overridden by a given but be careful,
diff --git a/samples/openapi3/client/petstore/dart-dio/binary_response/lib/src/api.dart b/samples/openapi3/client/petstore/dart-dio/binary_response/lib/src/api.dart
index 8943da413f65..d6c329a1f6a2 100644
--- a/samples/openapi3/client/petstore/dart-dio/binary_response/lib/src/api.dart
+++ b/samples/openapi3/client/petstore/dart-dio/binary_response/lib/src/api.dart
@@ -42,24 +42,64 @@ class Openapi {
     }
   }
 
+  /// Removes the OAuth token associated with the given [name].
+  ///
+  /// If no [OAuthInterceptor] is registered or no token exists for the given
+  /// [name], this method has no effect.
+  void removeOAuthToken(String name) {
+    if (this.dio.interceptors.any((i) => i is OAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is OAuthInterceptor) as OAuthInterceptor).tokens.remove(name);
+    }
+  }
+
   void setBearerAuth(String name, String token) {
     if (this.dio.interceptors.any((i) => i is BearerAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((i) => i is BearerAuthInterceptor) as BearerAuthInterceptor).tokens[name] = token;
     }
   }
 
+  /// Removes the bearer authentication token associated with the given [name].
+  ///
+  /// If no [BearerAuthInterceptor] is registered or no token exists for the
+  /// given [name], this method has no effect.
+  void removeBearerAuth(String name) {
+    if (this.dio.interceptors.any((i) => i is BearerAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is BearerAuthInterceptor) as BearerAuthInterceptor).tokens.remove(name);
+    }
+  }
+
   void setBasicAuth(String name, String username, String password) {
     if (this.dio.interceptors.any((i) => i is BasicAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((i) => i is BasicAuthInterceptor) as BasicAuthInterceptor).authInfo[name] = BasicAuthInfo(username, password);
     }
   }
 
+  /// Removes the basic authentication credentials associated with the given [name].
+  ///
+  /// If no [BasicAuthInterceptor] is registered or no credentials exist for the
+  /// given [name], this method has no effect.
+  void removeBasicAuth(String name) {
+    if (this.dio.interceptors.any((i) => i is BasicAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is BasicAuthInterceptor) as BasicAuthInterceptor).authInfo.remove(name);
+    }
+  }
+
   void setApiKey(String name, String apiKey) {
     if (this.dio.interceptors.any((i) => i is ApiKeyAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((element) => element is ApiKeyAuthInterceptor) as ApiKeyAuthInterceptor).apiKeys[name] = apiKey;
     }
   }
 
+  /// Removes the API key associated with the given [name].
+  ///
+  /// If no [ApiKeyAuthInterceptor] is registered or no API key exists for the
+  /// given [name], this method has no effect.
+  void removeApiKey(String name) {
+    if (this.dio.interceptors.any((i) => i is ApiKeyAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((element) => element is ApiKeyAuthInterceptor) as ApiKeyAuthInterceptor).apiKeys.remove(name);
+    }
+  }
+
   /// Get DefaultApi instance, base route and serializer can be overridden by a given but be careful,
   /// by doing that all interceptors will not be executed
   DefaultApi getDefaultApi() {
diff --git a/samples/openapi3/client/petstore/dart-dio/oneof/lib/src/api.dart b/samples/openapi3/client/petstore/dart-dio/oneof/lib/src/api.dart
index dfd8e847bdd9..3951a530bcd6 100644
--- a/samples/openapi3/client/petstore/dart-dio/oneof/lib/src/api.dart
+++ b/samples/openapi3/client/petstore/dart-dio/oneof/lib/src/api.dart
@@ -47,24 +47,64 @@ class Openapi {
     }
   }
 
+  /// Removes the OAuth token associated with the given [name].
+  ///
+  /// If no [OAuthInterceptor] is registered or no token exists for the given
+  /// [name], this method has no effect.
+  void removeOAuthToken(String name) {
+    if (this.dio.interceptors.any((i) => i is OAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is OAuthInterceptor) as OAuthInterceptor).tokens.remove(name);
+    }
+  }
+
   void setBearerAuth(String name, String token) {
     if (this.dio.interceptors.any((i) => i is BearerAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((i) => i is BearerAuthInterceptor) as BearerAuthInterceptor).tokens[name] = token;
     }
   }
 
+  /// Removes the bearer authentication token associated with the given [name].
+  ///
+  /// If no [BearerAuthInterceptor] is registered or no token exists for the
+  /// given [name], this method has no effect.
+  void removeBearerAuth(String name) {
+    if (this.dio.interceptors.any((i) => i is BearerAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is BearerAuthInterceptor) as BearerAuthInterceptor).tokens.remove(name);
+    }
+  }
+
   void setBasicAuth(String name, String username, String password) {
     if (this.dio.interceptors.any((i) => i is BasicAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((i) => i is BasicAuthInterceptor) as BasicAuthInterceptor).authInfo[name] = BasicAuthInfo(username, password);
     }
   }
 
+  /// Removes the basic authentication credentials associated with the given [name].
+  ///
+  /// If no [BasicAuthInterceptor] is registered or no credentials exist for the
+  /// given [name], this method has no effect.
+  void removeBasicAuth(String name) {
+    if (this.dio.interceptors.any((i) => i is BasicAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is BasicAuthInterceptor) as BasicAuthInterceptor).authInfo.remove(name);
+    }
+  }
+
   void setApiKey(String name, String apiKey) {
     if (this.dio.interceptors.any((i) => i is ApiKeyAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((element) => element is ApiKeyAuthInterceptor) as ApiKeyAuthInterceptor).apiKeys[name] = apiKey;
     }
   }
 
+  /// Removes the API key associated with the given [name].
+  ///
+  /// If no [ApiKeyAuthInterceptor] is registered or no API key exists for the
+  /// given [name], this method has no effect.
+  void removeApiKey(String name) {
+    if (this.dio.interceptors.any((i) => i is ApiKeyAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((element) => element is ApiKeyAuthInterceptor) as ApiKeyAuthInterceptor).apiKeys.remove(name);
+    }
+  }
+
   /// Get DefaultApi instance, base route and serializer can be overridden by a given but be careful,
   /// by doing that all interceptors will not be executed
   DefaultApi getDefaultApi() {
diff --git a/samples/openapi3/client/petstore/dart-dio/oneof_polymorphism_and_inheritance/lib/src/api.dart b/samples/openapi3/client/petstore/dart-dio/oneof_polymorphism_and_inheritance/lib/src/api.dart
index 3e6abb37ddb9..44446906c9b3 100644
--- a/samples/openapi3/client/petstore/dart-dio/oneof_polymorphism_and_inheritance/lib/src/api.dart
+++ b/samples/openapi3/client/petstore/dart-dio/oneof_polymorphism_and_inheritance/lib/src/api.dart
@@ -48,24 +48,64 @@ class Openapi {
     }
   }
 
+  /// Removes the OAuth token associated with the given [name].
+  ///
+  /// If no [OAuthInterceptor] is registered or no token exists for the given
+  /// [name], this method has no effect.
+  void removeOAuthToken(String name) {
+    if (this.dio.interceptors.any((i) => i is OAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is OAuthInterceptor) as OAuthInterceptor).tokens.remove(name);
+    }
+  }
+
   void setBearerAuth(String name, String token) {
     if (this.dio.interceptors.any((i) => i is BearerAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((i) => i is BearerAuthInterceptor) as BearerAuthInterceptor).tokens[name] = token;
     }
   }
 
+  /// Removes the bearer authentication token associated with the given [name].
+  ///
+  /// If no [BearerAuthInterceptor] is registered or no token exists for the
+  /// given [name], this method has no effect.
+  void removeBearerAuth(String name) {
+    if (this.dio.interceptors.any((i) => i is BearerAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is BearerAuthInterceptor) as BearerAuthInterceptor).tokens.remove(name);
+    }
+  }
+
   void setBasicAuth(String name, String username, String password) {
     if (this.dio.interceptors.any((i) => i is BasicAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((i) => i is BasicAuthInterceptor) as BasicAuthInterceptor).authInfo[name] = BasicAuthInfo(username, password);
     }
   }
 
+  /// Removes the basic authentication credentials associated with the given [name].
+  ///
+  /// If no [BasicAuthInterceptor] is registered or no credentials exist for the
+  /// given [name], this method has no effect.
+  void removeBasicAuth(String name) {
+    if (this.dio.interceptors.any((i) => i is BasicAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is BasicAuthInterceptor) as BasicAuthInterceptor).authInfo.remove(name);
+    }
+  }
+
   void setApiKey(String name, String apiKey) {
     if (this.dio.interceptors.any((i) => i is ApiKeyAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((element) => element is ApiKeyAuthInterceptor) as ApiKeyAuthInterceptor).apiKeys[name] = apiKey;
     }
   }
 
+  /// Removes the API key associated with the given [name].
+  ///
+  /// If no [ApiKeyAuthInterceptor] is registered or no API key exists for the
+  /// given [name], this method has no effect.
+  void removeApiKey(String name) {
+    if (this.dio.interceptors.any((i) => i is ApiKeyAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((element) => element is ApiKeyAuthInterceptor) as ApiKeyAuthInterceptor).apiKeys.remove(name);
+    }
+  }
+
   /// Get BarApi instance, base route and serializer can be overridden by a given but be careful,
   /// by doing that all interceptors will not be executed
   BarApi getBarApi() {
diff --git a/samples/openapi3/client/petstore/dart-dio/oneof_primitive/lib/src/api.dart b/samples/openapi3/client/petstore/dart-dio/oneof_primitive/lib/src/api.dart
index 7eb05e3ea4e6..b0413ea8fa33 100644
--- a/samples/openapi3/client/petstore/dart-dio/oneof_primitive/lib/src/api.dart
+++ b/samples/openapi3/client/petstore/dart-dio/oneof_primitive/lib/src/api.dart
@@ -47,24 +47,64 @@ class Openapi {
     }
   }
 
+  /// Removes the OAuth token associated with the given [name].
+  ///
+  /// If no [OAuthInterceptor] is registered or no token exists for the given
+  /// [name], this method has no effect.
+  void removeOAuthToken(String name) {
+    if (this.dio.interceptors.any((i) => i is OAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is OAuthInterceptor) as OAuthInterceptor).tokens.remove(name);
+    }
+  }
+
   void setBearerAuth(String name, String token) {
     if (this.dio.interceptors.any((i) => i is BearerAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((i) => i is BearerAuthInterceptor) as BearerAuthInterceptor).tokens[name] = token;
     }
   }
 
+  /// Removes the bearer authentication token associated with the given [name].
+  ///
+  /// If no [BearerAuthInterceptor] is registered or no token exists for the
+  /// given [name], this method has no effect.
+  void removeBearerAuth(String name) {
+    if (this.dio.interceptors.any((i) => i is BearerAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is BearerAuthInterceptor) as BearerAuthInterceptor).tokens.remove(name);
+    }
+  }
+
   void setBasicAuth(String name, String username, String password) {
     if (this.dio.interceptors.any((i) => i is BasicAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((i) => i is BasicAuthInterceptor) as BasicAuthInterceptor).authInfo[name] = BasicAuthInfo(username, password);
     }
   }
 
+  /// Removes the basic authentication credentials associated with the given [name].
+  ///
+  /// If no [BasicAuthInterceptor] is registered or no credentials exist for the
+  /// given [name], this method has no effect.
+  void removeBasicAuth(String name) {
+    if (this.dio.interceptors.any((i) => i is BasicAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is BasicAuthInterceptor) as BasicAuthInterceptor).authInfo.remove(name);
+    }
+  }
+
   void setApiKey(String name, String apiKey) {
     if (this.dio.interceptors.any((i) => i is ApiKeyAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((element) => element is ApiKeyAuthInterceptor) as ApiKeyAuthInterceptor).apiKeys[name] = apiKey;
     }
   }
 
+  /// Removes the API key associated with the given [name].
+  ///
+  /// If no [ApiKeyAuthInterceptor] is registered or no API key exists for the
+  /// given [name], this method has no effect.
+  void removeApiKey(String name) {
+    if (this.dio.interceptors.any((i) => i is ApiKeyAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((element) => element is ApiKeyAuthInterceptor) as ApiKeyAuthInterceptor).apiKeys.remove(name);
+    }
+  }
+
   /// Get DefaultApi instance, base route and serializer can be overridden by a given but be careful,
   /// by doing that all interceptors will not be executed
   DefaultApi getDefaultApi() {
diff --git a/samples/openapi3/client/petstore/dart-dio/petstore-timemachine/lib/src/api.dart b/samples/openapi3/client/petstore/dart-dio/petstore-timemachine/lib/src/api.dart
index 43d2a2a08b13..1807483f79d2 100644
--- a/samples/openapi3/client/petstore/dart-dio/petstore-timemachine/lib/src/api.dart
+++ b/samples/openapi3/client/petstore/dart-dio/petstore-timemachine/lib/src/api.dart
@@ -49,24 +49,64 @@ class Openapi {
     }
   }
 
+  /// Removes the OAuth token associated with the given [name].
+  ///
+  /// If no [OAuthInterceptor] is registered or no token exists for the given
+  /// [name], this method has no effect.
+  void removeOAuthToken(String name) {
+    if (this.dio.interceptors.any((i) => i is OAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is OAuthInterceptor) as OAuthInterceptor).tokens.remove(name);
+    }
+  }
+
   void setBearerAuth(String name, String token) {
     if (this.dio.interceptors.any((i) => i is BearerAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((i) => i is BearerAuthInterceptor) as BearerAuthInterceptor).tokens[name] = token;
     }
   }
 
+  /// Removes the bearer authentication token associated with the given [name].
+  ///
+  /// If no [BearerAuthInterceptor] is registered or no token exists for the
+  /// given [name], this method has no effect.
+  void removeBearerAuth(String name) {
+    if (this.dio.interceptors.any((i) => i is BearerAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is BearerAuthInterceptor) as BearerAuthInterceptor).tokens.remove(name);
+    }
+  }
+
   void setBasicAuth(String name, String username, String password) {
     if (this.dio.interceptors.any((i) => i is BasicAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((i) => i is BasicAuthInterceptor) as BasicAuthInterceptor).authInfo[name] = BasicAuthInfo(username, password);
     }
   }
 
+  /// Removes the basic authentication credentials associated with the given [name].
+  ///
+  /// If no [BasicAuthInterceptor] is registered or no credentials exist for the
+  /// given [name], this method has no effect.
+  void removeBasicAuth(String name) {
+    if (this.dio.interceptors.any((i) => i is BasicAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is BasicAuthInterceptor) as BasicAuthInterceptor).authInfo.remove(name);
+    }
+  }
+
   void setApiKey(String name, String apiKey) {
     if (this.dio.interceptors.any((i) => i is ApiKeyAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((element) => element is ApiKeyAuthInterceptor) as ApiKeyAuthInterceptor).apiKeys[name] = apiKey;
     }
   }
 
+  /// Removes the API key associated with the given [name].
+  ///
+  /// If no [ApiKeyAuthInterceptor] is registered or no API key exists for the
+  /// given [name], this method has no effect.
+  void removeApiKey(String name) {
+    if (this.dio.interceptors.any((i) => i is ApiKeyAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((element) => element is ApiKeyAuthInterceptor) as ApiKeyAuthInterceptor).apiKeys.remove(name);
+    }
+  }
+
   /// Get PetApi instance, base route and serializer can be overridden by a given but be careful,
   /// by doing that all interceptors will not be executed
   PetApi getPetApi() {
diff --git a/samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake-json_serializable/lib/src/api.dart b/samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake-json_serializable/lib/src/api.dart
index 835b76584b2d..4009d71ad3b5 100644
--- a/samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake-json_serializable/lib/src/api.dart
+++ b/samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake-json_serializable/lib/src/api.dart
@@ -48,24 +48,64 @@ class Openapi {
     }
   }
 
+  /// Removes the OAuth token associated with the given [name].
+  ///
+  /// If no [OAuthInterceptor] is registered or no token exists for the given
+  /// [name], this method has no effect.
+  void removeOAuthToken(String name) {
+    if (this.dio.interceptors.any((i) => i is OAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is OAuthInterceptor) as OAuthInterceptor).tokens.remove(name);
+    }
+  }
+
   void setBearerAuth(String name, String token) {
     if (this.dio.interceptors.any((i) => i is BearerAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((i) => i is BearerAuthInterceptor) as BearerAuthInterceptor).tokens[name] = token;
     }
   }
 
+  /// Removes the bearer authentication token associated with the given [name].
+  ///
+  /// If no [BearerAuthInterceptor] is registered or no token exists for the
+  /// given [name], this method has no effect.
+  void removeBearerAuth(String name) {
+    if (this.dio.interceptors.any((i) => i is BearerAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is BearerAuthInterceptor) as BearerAuthInterceptor).tokens.remove(name);
+    }
+  }
+
   void setBasicAuth(String name, String username, String password) {
     if (this.dio.interceptors.any((i) => i is BasicAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((i) => i is BasicAuthInterceptor) as BasicAuthInterceptor).authInfo[name] = BasicAuthInfo(username, password);
     }
   }
 
+  /// Removes the basic authentication credentials associated with the given [name].
+  ///
+  /// If no [BasicAuthInterceptor] is registered or no credentials exist for the
+  /// given [name], this method has no effect.
+  void removeBasicAuth(String name) {
+    if (this.dio.interceptors.any((i) => i is BasicAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is BasicAuthInterceptor) as BasicAuthInterceptor).authInfo.remove(name);
+    }
+  }
+
   void setApiKey(String name, String apiKey) {
     if (this.dio.interceptors.any((i) => i is ApiKeyAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((element) => element is ApiKeyAuthInterceptor) as ApiKeyAuthInterceptor).apiKeys[name] = apiKey;
     }
   }
 
+  /// Removes the API key associated with the given [name].
+  ///
+  /// If no [ApiKeyAuthInterceptor] is registered or no API key exists for the
+  /// given [name], this method has no effect.
+  void removeApiKey(String name) {
+    if (this.dio.interceptors.any((i) => i is ApiKeyAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((element) => element is ApiKeyAuthInterceptor) as ApiKeyAuthInterceptor).apiKeys.remove(name);
+    }
+  }
+
   /// Get AnotherFakeApi instance, base route and serializer can be overridden by a given but be careful,
   /// by doing that all interceptors will not be executed
   AnotherFakeApi getAnotherFakeApi() {
diff --git a/samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake/lib/src/api.dart b/samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake/lib/src/api.dart
index 53d0c5a524bb..df659eb2f2a2 100644
--- a/samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake/lib/src/api.dart
+++ b/samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake/lib/src/api.dart
@@ -53,24 +53,64 @@ class Openapi {
     }
   }
 
+  /// Removes the OAuth token associated with the given [name].
+  ///
+  /// If no [OAuthInterceptor] is registered or no token exists for the given
+  /// [name], this method has no effect.
+  void removeOAuthToken(String name) {
+    if (this.dio.interceptors.any((i) => i is OAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is OAuthInterceptor) as OAuthInterceptor).tokens.remove(name);
+    }
+  }
+
   void setBearerAuth(String name, String token) {
     if (this.dio.interceptors.any((i) => i is BearerAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((i) => i is BearerAuthInterceptor) as BearerAuthInterceptor).tokens[name] = token;
     }
   }
 
+  /// Removes the bearer authentication token associated with the given [name].
+  ///
+  /// If no [BearerAuthInterceptor] is registered or no token exists for the
+  /// given [name], this method has no effect.
+  void removeBearerAuth(String name) {
+    if (this.dio.interceptors.any((i) => i is BearerAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is BearerAuthInterceptor) as BearerAuthInterceptor).tokens.remove(name);
+    }
+  }
+
   void setBasicAuth(String name, String username, String password) {
     if (this.dio.interceptors.any((i) => i is BasicAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((i) => i is BasicAuthInterceptor) as BasicAuthInterceptor).authInfo[name] = BasicAuthInfo(username, password);
     }
   }
 
+  /// Removes the basic authentication credentials associated with the given [name].
+  ///
+  /// If no [BasicAuthInterceptor] is registered or no credentials exist for the
+  /// given [name], this method has no effect.
+  void removeBasicAuth(String name) {
+    if (this.dio.interceptors.any((i) => i is BasicAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((i) => i is BasicAuthInterceptor) as BasicAuthInterceptor).authInfo.remove(name);
+    }
+  }
+
   void setApiKey(String name, String apiKey) {
     if (this.dio.interceptors.any((i) => i is ApiKeyAuthInterceptor)) {
       (this.dio.interceptors.firstWhere((element) => element is ApiKeyAuthInterceptor) as ApiKeyAuthInterceptor).apiKeys[name] = apiKey;
     }
   }
 
+  /// Removes the API key associated with the given [name].
+  ///
+  /// If no [ApiKeyAuthInterceptor] is registered or no API key exists for the
+  /// given [name], this method has no effect.
+  void removeApiKey(String name) {
+    if (this.dio.interceptors.any((i) => i is ApiKeyAuthInterceptor)) {
+      (this.dio.interceptors.firstWhere((element) => element is ApiKeyAuthInterceptor) as ApiKeyAuthInterceptor).apiKeys.remove(name);
+    }
+  }
+
   /// Get AnotherFakeApi instance, base route and serializer can be overridden by a given but be careful,
   /// by doing that all interceptors will not be executed
   AnotherFakeApi getAnotherFakeApi() {