OpenAPITools · ctreatma · Apr 28, 2025 · May 1, 2025 · May 1, 2025 · May 1, 2025
diff --git a/bin/configs/c-bearer-auth.yaml b/bin/configs/c-bearer-auth.yaml
@@ -2,3 +2,5 @@ generatorName: c
 outputDir: samples/client/others/c/bearerAuth
 inputSpec: modules/openapi-generator/src/test/resources/3_0/c/bearer_auth.yaml
 templateDir: modules/openapi-generator/src/main/resources/C-libcurl
+additionalProperties:
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/cpp-restbed-server.yaml b/bin/configs/cpp-restbed-server.yaml
@@ -2,3 +2,5 @@ generatorName: cpp-restbed-server
 outputDir: samples/server/petstore/cpp-restbed/generated/3_0
 inputSpec: modules/openapi-generator/src/test/resources/3_0/petstore-with-fake-endpoints-models-for-testing.yaml
 templateDir: modules/openapi-generator/src/main/resources/cpp-restbed-server
+additionalProperties:
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/csharp-generichost-latest-helloWorld.yaml b/bin/configs/csharp-generichost-latest-helloWorld.yaml
@@ -7,3 +7,4 @@ additionalProperties:
   packageGuid: '{321C8C3F-0156-40C1-AE42-D59761FB9B6C}'
   modelPropertySorting: alphabetical
   operationParameterSorting: alphabetical
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/csharp-generichost-latest-tags.yaml b/bin/configs/csharp-generichost-latest-tags.yaml
@@ -7,3 +7,4 @@ additionalProperties:
   packageGuid: '{321C8C3F-0156-40C1-AE42-D59761FB9B6C}'
   modelPropertySorting: alphabetical
   operationParameterSorting: alphabetical
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/csharp-generichost-net4.7-useDateTimeForDate.yaml b/bin/configs/csharp-generichost-net4.7-useDateTimeForDate.yaml
@@ -9,3 +9,4 @@ additionalProperties:
   targetFramework: net47
   modelPropertySorting: alphabetical
   operationParameterSorting: alphabetical
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/csharp-generichost-net4.8-useDateTimeForDate.yaml b/bin/configs/csharp-generichost-net4.8-useDateTimeForDate.yaml
@@ -9,3 +9,4 @@ additionalProperties:
   targetFramework: net48
   modelPropertySorting: alphabetical
   operationParameterSorting: alphabetical
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/csharp-generichost-net8-useDateTimeForDate.yaml b/bin/configs/csharp-generichost-net8-useDateTimeForDate.yaml
@@ -9,3 +9,4 @@ additionalProperties:
   targetFramework: net8.0
   modelPropertySorting: alphabetical
   operationParameterSorting: alphabetical
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/csharp-generichost-net9-useDateTimeForDate.yaml b/bin/configs/csharp-generichost-net9-useDateTimeForDate.yaml
@@ -9,3 +9,4 @@ additionalProperties:
   targetFramework: net9.0
   modelPropertySorting: alphabetical
   operationParameterSorting: alphabetical
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/csharp-restsharp-net4.7-multipleFrameworks.yaml b/bin/configs/csharp-restsharp-net4.7-multipleFrameworks.yaml
@@ -8,3 +8,4 @@ additionalProperties:
   targetFramework: netstandard2.1;net47
   useCompareNetObjects: "true"
   equatable: true
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/csharp-restsharp-net8-compareNetObjects.yaml b/bin/configs/csharp-restsharp-net8-compareNetObjects.yaml
@@ -8,3 +8,4 @@ additionalProperties:
   targetFramework: net8.0
   useCompareNetObjects: "true"
   equatable: true
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/csharp-restsharp-net8-echo-api.yaml b/bin/configs/csharp-restsharp-net8-echo-api.yaml
@@ -9,3 +9,4 @@ additionalProperties:
   setCompareNetObjects: "true"
   hideGenerationTimestamp: "true"
   equatable: true
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/csharp-restsharp-net8-name-mappings.yaml b/bin/configs/csharp-restsharp-net8-name-mappings.yaml
@@ -18,3 +18,4 @@ additionalProperties:
   hideGenerationTimestamp: "true"
   targetFramework: net8.0
   equatable: true
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/csharp-restsharp-net8-useDateTimeForDate.yaml b/bin/configs/csharp-restsharp-net8-useDateTimeForDate.yaml
@@ -8,3 +8,4 @@ additionalProperties:
   packageGuid: '{D0A67E81-4061-48EB-B4B8-C73BDF8B2D95}'
   targetFramework: net8.0
   useDateTimeForDate: true
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/csharp-restsharp-netstandard2.0-complexfiles.yaml b/bin/configs/csharp-restsharp-netstandard2.0-complexfiles.yaml
@@ -8,5 +8,6 @@ additionalProperties:
   targetFramework: netstandard2.0
   useCompareNetObjects: "true"
   equatable: true
+  disallowAdditionalPropertiesIfNotPresent: true
 globalProperties:
   skipFormModel: "false"
diff --git a/bin/configs/csharp-restsharp-useVirtualForHooks.yaml b/bin/configs/csharp-restsharp-useVirtualForHooks.yaml
@@ -8,3 +8,4 @@ additionalProperties:
   packageGuid: '{D0A67E81-4061-48EB-B4B8-C73BDF8B2D95}'
   targetFramework: net8.0
   useVirtualForHooks: true
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/csharp-unityWebRequest-net9.yaml b/bin/configs/csharp-unityWebRequest-net9.yaml
@@ -7,3 +7,4 @@ library: unityWebRequest
 additionalProperties:
   targetFramework: net9.0
   equatable: true
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/csharp-unityWebRequest-netstandard2.0.yaml b/bin/configs/csharp-unityWebRequest-netstandard2.0.yaml
@@ -7,3 +7,4 @@ library: unityWebRequest
 additionalProperties:
   targetFramework: netstandard2.0
   equatable: true
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/dart-dio-petstore-client-lib-fake.yaml b/bin/configs/dart-dio-petstore-client-lib-fake.yaml
@@ -9,5 +9,6 @@ typeMappings:
 additionalProperties:
   hideGenerationTimestamp: "true"
   enumUnknownDefaultCase: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
 reservedWordsMappings:
   class: "classField"
diff --git a/bin/configs/go-echo-api.yaml b/bin/configs/go-echo-api.yaml
@@ -4,3 +4,4 @@ inputSpec: modules/openapi-generator/src/test/resources/3_0/echo_api.yaml
 templateDir: modules/openapi-generator/src/main/resources/go
 additionalProperties:
   hideGenerationTimestamp: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/go-echo-external-refs-test.yaml b/bin/configs/go-echo-external-refs-test.yaml
@@ -4,3 +4,4 @@ inputSpec: modules/openapi-generator/src/test/resources/3_0/external-refs/echo_a
 templateDir: modules/openapi-generator/src/main/resources/go
 additionalProperties:
   hideGenerationTimestamp: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/go-multiple-allof-ref-with-discriminator.yaml b/bin/configs/go-multiple-allof-ref-with-discriminator.yaml
@@ -3,3 +3,4 @@ outputDir: samples/client/others/go/allof_multiple_ref_and_discriminator
 inputSpec: modules/openapi-generator/src/test/resources/3_0/go/allof_multiple_ref_and_discriminator.yaml
 additionalProperties:
   hideGenerationTimestamp: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/go-oneof-anyof-required.yaml b/bin/configs/go-oneof-anyof-required.yaml
@@ -3,3 +3,4 @@ outputDir: samples/client/others/go/oneof-anyof-required
 inputSpec: modules/openapi-generator/src/test/resources/3_0/go/spec-with-oneof-anyof-required.yaml
 additionalProperties:
   hideGenerationTimestamp: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/go-oneof-discriminator-lookup.yaml b/bin/configs/go-oneof-discriminator-lookup.yaml
@@ -4,3 +4,4 @@ inputSpec: modules/openapi-generator/src/test/resources/3_0/go/spec-with-oneof-d
 additionalProperties:
   useOneOfDiscriminatorLookup: "true"
   hideGenerationTimestamp: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/go-petstore-oas2.yaml b/bin/configs/go-petstore-oas2.yaml
@@ -5,3 +5,4 @@ templateDir: modules/openapi-generator/src/main/resources/go
 additionalProperties:
   packageName: petstore
   generateInterfaces: true
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-feign-gson-echo-api.yaml b/bin/configs/java-feign-gson-echo-api.yaml
@@ -7,3 +7,4 @@ additionalProperties:
   serializationLibrary: gson
   artifactId: echo-api-feign-json
   hideGenerationTimestamp: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-feign-hc5.yaml b/bin/configs/java-feign-hc5.yaml
@@ -6,4 +6,5 @@ templateDir: modules/openapi-generator/src/main/resources/Java
 additionalProperties:
   booleanGetterPrefix: is
   artifactId: petstore-feign-hc5
-  hideGenerationTimestamp: "true"
+  hideGenerationTimestamp: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-feign-no-nullable.yaml b/bin/configs/java-feign-no-nullable.yaml
@@ -11,3 +11,4 @@ additionalProperties:
   openApiNullable: false
   useReflectionEqualsHashCode: true
   annotationLibrary: "swagger1"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-feign.yaml b/bin/configs/java-feign.yaml
@@ -7,3 +7,4 @@ additionalProperties:
   booleanGetterPrefix: is
   artifactId: petstore-feign
   hideGenerationTimestamp: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-jersey2-8-oas2.yaml b/bin/configs/java-jersey2-8-oas2.yaml
@@ -9,3 +9,4 @@ additionalProperties:
   serverPort: "8082"
   dateLibrary: java8
   useOneOfDiscriminatorLookup: true
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-jersey2-8-oneOfDuplicateList.yaml b/bin/configs/java-jersey2-8-oneOfDuplicateList.yaml
@@ -5,3 +5,4 @@ inputSpec: modules/openapi-generator/src/test/resources/3_0/oneOf_duplicateArray
 templateDir: modules/openapi-generator/src/main/resources/Java
 additionalProperties:
   hideGenerationTimestamp: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-jersey2-8-oneOfMixed.yaml b/bin/configs/java-jersey2-8-oneOfMixed.yaml
@@ -5,3 +5,4 @@ inputSpec: modules/openapi-generator/src/test/resources/3_0/oneOf_primitiveAndAr
 templateDir: modules/openapi-generator/src/main/resources/Java
 additionalProperties:
   hideGenerationTimestamp: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-jersey2-java8-localdatetime.yaml b/bin/configs/java-jersey2-java8-localdatetime.yaml
@@ -9,3 +9,4 @@ additionalProperties:
   dateLibrary: java8-localdatetime
   java8: true
   delegatePattern: true
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-jersey3-oneOf.yaml b/bin/configs/java-jersey3-oneOf.yaml
@@ -5,3 +5,4 @@ inputSpec: modules/openapi-generator/src/test/resources/3_0/oneOf_additionalProp
 templateDir: modules/openapi-generator/src/main/resources/Java
 additionalProperties:
   hideGenerationTimestamp: true
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-okhttp-gson-dynamicOperations.yaml b/bin/configs/java-okhttp-gson-dynamicOperations.yaml
@@ -7,3 +7,4 @@ additionalProperties:
   artifactId: petstore-okhttp-gson-dynamicoperations
   hideGenerationTimestamp: "true"
   dynamicOperations: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-okhttp-gson-echo-api.yaml b/bin/configs/java-okhttp-gson-echo-api.yaml
@@ -6,3 +6,4 @@ templateDir: modules/openapi-generator/src/main/resources/Java
 additionalProperties:
   artifactId: echo-api-okhttp-gson
   hideGenerationTimestamp: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-okhttp-gson-oneOf-array.yaml b/bin/configs/java-okhttp-gson-oneOf-array.yaml
@@ -6,3 +6,4 @@ templateDir: modules/openapi-generator/src/main/resources/Java
 additionalProperties:
   hideGenerationTimestamp: "true"
   useBeanValidation: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-okhttp-gson-parcelableModel.yaml b/bin/configs/java-okhttp-gson-parcelableModel.yaml
@@ -7,3 +7,4 @@ additionalProperties:
   parcelableModel: "true"
   artifactId: petstore-okhttp-gson-parcelableModel
   hideGenerationTimestamp: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-okhttp-gson-streaming.yaml b/bin/configs/java-okhttp-gson-streaming.yaml
@@ -9,3 +9,4 @@ additionalProperties:
   supportStreaming: true
   serializableModel: true
   enumPropertyNaming: legacy
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-okhttp-user-defined-templates.yaml b/bin/configs/java-okhttp-user-defined-templates.yaml
@@ -5,6 +5,7 @@ inputSpec: modules/openapi-generator/src/test/resources/3_0/petstore.yaml
 templateDir: modules/openapi-generator/src/main/resources/Java
 additionalProperties:
   hideGenerationTimestamp: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
 files:
   README.mustache:
     destinationFilename: info.md

diff --git a/bin/configs/java-restclient-echo-api.yaml b/bin/configs/java-restclient-echo-api.yaml
@@ -6,7 +6,7 @@ templateDir: modules/openapi-generator/src/main/resources/Java
 additionalProperties:
   artifactId: echo-api-native
   hideGenerationTimestamp: "true"
-
+  disallowAdditionalPropertiesIfNotPresent: true
 typeMappings:
   OffsetDateTime: "Instant"
 importMappings:

diff --git a/bin/configs/java-restclient-swagger2.yaml b/bin/configs/java-restclient-swagger2.yaml
@@ -8,3 +8,4 @@ additionalProperties:
   hideGenerationTimestamp: "true"
   containerDefaultToNull: "true"
   annotationLibrary: "swagger2"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-restclient-useSingleRequestParameter-static.yaml b/bin/configs/java-restclient-useSingleRequestParameter-static.yaml
@@ -6,4 +6,5 @@ templateDir: modules/openapi-generator/src/main/resources/Java
 additionalProperties:
   artifactId: singleparam-restclient-static
   hideGenerationTimestamp: "true"
-  useSingleRequestParameter: static
+  useSingleRequestParameter: static
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-restclient-useSingleRequestParameter.yaml b/bin/configs/java-restclient-useSingleRequestParameter.yaml
@@ -7,3 +7,4 @@ additionalProperties:
   artifactId: singleparam-restclient
   hideGenerationTimestamp: "true"
   useSingleRequestParameter: true
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-restclient.yaml b/bin/configs/java-restclient.yaml
@@ -7,3 +7,4 @@ additionalProperties:
   artifactId: petstore-restclient
   hideGenerationTimestamp: "true"
   containerDefaultToNull: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-resttemplate-echo-api.yaml b/bin/configs/java-resttemplate-echo-api.yaml
@@ -8,3 +8,4 @@ additionalProperties:
   hideGenerationTimestamp: "true"
   java8: true
   containerDefaultToNull: true
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-resttemplate-withXml.yaml b/bin/configs/java-resttemplate-withXml.yaml
@@ -8,3 +8,4 @@ additionalProperties:
   withXml: "true"
   artifactId: petstore-resttemplate-withxml
   hideGenerationTimestamp: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-resttemplate.yaml b/bin/configs/java-resttemplate.yaml
@@ -10,3 +10,4 @@ additionalProperties:
   containerDefaultToNull: true
   generateConstructorWithAllArgs: true
   generateBuilders: true
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-webclient-jakarta.yaml b/bin/configs/java-webclient-jakarta.yaml
@@ -7,3 +7,4 @@ additionalProperties:
   artifactId: petstore-webclient
   hideGenerationTimestamp: "true"
   useJakartaEe: true
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-webclient-swagger2.yaml b/bin/configs/java-webclient-swagger2.yaml
@@ -8,3 +8,4 @@ additionalProperties:
   hideGenerationTimestamp: "true"
   containerDefaultToNull: "true"
   annotationLibrary: "swagger2"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-webclient-useSingleRequestParameter.yaml b/bin/configs/java-webclient-useSingleRequestParameter.yaml
@@ -7,3 +7,4 @@ additionalProperties:
   artifactId: singleparam-webclient
   hideGenerationTimestamp: "true"
   useSingleRequestParameter: true
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/java-webclient.yaml b/bin/configs/java-webclient.yaml
@@ -7,3 +7,4 @@ additionalProperties:
   artifactId: petstore-webclient
   hideGenerationTimestamp: "true"
   containerDefaultToNull: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/jaxrs-spec-jakarta.yaml b/bin/configs/jaxrs-spec-jakarta.yaml
@@ -9,3 +9,4 @@ additionalProperties:
   implicitHeadersRegex: (api_key|enum_header_string)
   generateBuilders: "true"
   useJakartaEe: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/jaxrs-spec-quarkus-microprofile-openapi-annotations.yaml b/bin/configs/jaxrs-spec-quarkus-microprofile-openapi-annotations.yaml
@@ -11,3 +11,4 @@ additionalProperties:
   useMicroProfileOpenAPIAnnotations: "true"
   library: "quarkus"
   dateLibrary: "java8-localdatetime"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/jaxrs-spec-quarkus-mutiny.yaml b/bin/configs/jaxrs-spec-quarkus-mutiny.yaml
@@ -13,3 +13,4 @@ additionalProperties:
   useMutiny: "true"
   library: "quarkus"
   dateLibrary: "java8-localdatetime"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/jaxrs-spec-required-and-readonly-property.yaml b/bin/configs/jaxrs-spec-required-and-readonly-property.yaml
@@ -8,3 +8,4 @@ additionalProperties:
   hideGenerationTimestamp: "true"
   implicitHeadersRegex: (api_key|enum_header_string)
   generateBuilders: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/jaxrs-spec.yaml b/bin/configs/jaxrs-spec.yaml
@@ -8,3 +8,4 @@ additionalProperties:
   hideGenerationTimestamp: "true"
   implicitHeadersRegex: (api_key|enum_header_string)
   generateBuilders: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/powershell-echo-api.yaml b/bin/configs/powershell-echo-api.yaml
@@ -5,3 +5,4 @@ templateDir: modules/openapi-generator/src/main/resources/powershell
 additionalProperties:
   hideGenerationTimestamp: "true"
   packageGuid: a27b908d-2a20-467f-bc32-af6f3a654ac5
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/powershell.yaml b/bin/configs/powershell.yaml
@@ -14,6 +14,7 @@ additionalProperties:
   projectUri: https://github.com/OpenAPITools/openapi-generator
   releaseNotes: 'This is a sample project'
   tags: 'PetStore,powershell,sdk'
+  disallowAdditionalPropertiesIfNotPresent: true
 nameMappings:
   name_mapping: SomethingElse
 modelNameMappings:

diff --git a/bin/configs/protobuf-schema.yaml b/bin/configs/protobuf-schema.yaml
@@ -4,6 +4,7 @@ inputSpec: modules/openapi-generator/src/test/resources/3_0/protobuf/petstore.ya
 templateDir: modules/openapi-generator/src/main/resources/protobuf-schema
 additionalProperties:
   packageName: petstore
+  disallowAdditionalPropertiesIfNotPresent: true
 typeMappings:
   object: "google.protobuf.Struct"
 importMappings:

diff --git a/bin/configs/python-aiohttp.yaml b/bin/configs/python-aiohttp.yaml
@@ -6,6 +6,7 @@ library: asyncio
 additionalProperties:
   packageName: petstore_api
   mapNumberTo: float
+  disallowAdditionalPropertiesIfNotPresent: true
 nameMappings:
   _type: underscore_type
   type_: type_with_underscore

diff --git a/bin/configs/python-echo-api.yaml b/bin/configs/python-echo-api.yaml
@@ -4,3 +4,4 @@ inputSpec: modules/openapi-generator/src/test/resources/3_0/echo_api.yaml
 templateDir: modules/openapi-generator/src/main/resources/python
 additionalProperties:
   hideGenerationTimestamp: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/python-fastapi.yaml b/bin/configs/python-fastapi.yaml
@@ -5,3 +5,4 @@ templateDir: modules/openapi-generator/src/main/resources/python-fastapi
 sourceFolder: "src"
 additionalProperties:
   hideGenerationTimestamp: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/python-pydantic-v1-aiohttp.yaml b/bin/configs/python-pydantic-v1-aiohttp.yaml
@@ -6,3 +6,4 @@ library: asyncio
 additionalProperties:
   packageName: petstore_api
   mapNumberTo: float
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/python-pydantic-v1-echo-api.yaml b/bin/configs/python-pydantic-v1-echo-api.yaml
@@ -4,3 +4,4 @@ inputSpec: modules/openapi-generator/src/test/resources/3_0/echo_api.yaml
 templateDir: modules/openapi-generator/src/main/resources/python-pydantic-v1
 additionalProperties:
   hideGenerationTimestamp: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/r-echo-api.yaml b/bin/configs/r-echo-api.yaml
@@ -4,3 +4,4 @@ inputSpec: modules/openapi-generator/src/test/resources/3_0/echo_api.yaml
 templateDir: modules/openapi-generator/src/main/resources/r
 additionalProperties:
   hideGenerationTimestamp: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/r-httr2-client.yaml b/bin/configs/r-httr2-client.yaml
@@ -17,4 +17,4 @@ additionalProperties:
   returnExceptionOnFailure: true
   errorObjectType: "ModelApiResponse"
   operationIdNaming: snake_case
-
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/rust-server-openapi-v3.yaml b/bin/configs/rust-server-openapi-v3.yaml
@@ -6,3 +6,4 @@ generateAliasAsModel: true
 additionalProperties:
   hideGenerationTimestamp: "true"
   packageName: openapi-v3
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/rust-server-petstore-with-fake-endpoints-models-for-testing.yaml b/bin/configs/rust-server-petstore-with-fake-endpoints-models-for-testing.yaml
@@ -7,3 +7,4 @@ additionalProperties:
   hideGenerationTimestamp: "true"
   packageName: petstore-with-fake-endpoints-models-for-testing
   publishRustRegistry: crates-io
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/scala-cask-petstore.yaml b/bin/configs/scala-cask-petstore.yaml
@@ -10,4 +10,5 @@ additionalProperties:
   modelPackage: "sample.cask.model"
   apiPackage: "sample.cask.api"
   gitRepoId: "sample-cask-repo"
-  gitUserId: "sample-cask-user"
+  gitUserId: "sample-cask-user"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/spring-boot-beanvalidation-no-nullable.yaml b/bin/configs/spring-boot-beanvalidation-no-nullable.yaml
@@ -11,3 +11,4 @@ additionalProperties:
   artifactId: spring-boot-beanvalidation-no-nullable
   hideGenerationTimestamp: "true"
   openApiNullable: "false"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/spring-boot-beanvalidation.yaml b/bin/configs/spring-boot-beanvalidation.yaml
@@ -10,3 +10,4 @@ additionalProperties:
   useBeanValidation: true
   artifactId: spring-boot-beanvalidation
   hideGenerationTimestamp: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/spring-boot-builtin-validation.yaml b/bin/configs/spring-boot-builtin-validation.yaml
@@ -11,3 +11,4 @@ additionalProperties:
   useSpringBuiltInValidation: true
   artifactId: spring-boot-builtin-validation
   hideGenerationTimestamp: "true"
+  disallowAdditionalPropertiesIfNotPresent: true
diff --git a/bin/configs/spring-boot-defaultInterface-unhandledException.yaml b/bin/configs/spring-boot-defaultInterface-unhandledException.yaml
@@ -9,3 +9,4 @@ additionalProperties:
   interfaceOnly: true
   skipDefaultInterface: true
   unhandledException: true
+  disallowAdditionalPropertiesIfNotPresent: true