diff --git a/modules/openapi-generator/src/main/resources/typescript-angular/api.base.service.mustache b/modules/openapi-generator/src/main/resources/typescript-angular/api.base.service.mustache
index 92a07771a0e..311fd1aa079 100644
--- a/modules/openapi-generator/src/main/resources/typescript-angular/api.base.service.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript-angular/api.base.service.mustache
@@ -1,3 +1,4 @@
+{{>licenseInfo}}
 import { HttpHeaders, HttpParams, HttpParameterCodec } from '@angular/common/http';
 import { CustomHttpParameterCodec } from './encoder';
 import { {{configurationClassName}} } from './configuration';
diff --git a/samples/client/others/typescript-angular/builds/composed-schemas-tagged-unions/api.base.service.ts b/samples/client/others/typescript-angular/builds/composed-schemas-tagged-unions/api.base.service.ts
index 8184ceb9729..b4e99170329 100644
--- a/samples/client/others/typescript-angular/builds/composed-schemas-tagged-unions/api.base.service.ts
+++ b/samples/client/others/typescript-angular/builds/composed-schemas-tagged-unions/api.base.service.ts
@@ -1,3 +1,12 @@
+/**
+ * Schemas with different types of composition for testing models generation
+ *
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
 import { HttpHeaders, HttpParams, HttpParameterCodec } from '@angular/common/http';
 import { CustomHttpParameterCodec } from './encoder';
 import { Configuration } from './configuration';
diff --git a/samples/client/others/typescript-angular/builds/composed-schemas/api.base.service.ts b/samples/client/others/typescript-angular/builds/composed-schemas/api.base.service.ts
index 8184ceb9729..b4e99170329 100644
--- a/samples/client/others/typescript-angular/builds/composed-schemas/api.base.service.ts
+++ b/samples/client/others/typescript-angular/builds/composed-schemas/api.base.service.ts
@@ -1,3 +1,12 @@
+/**
+ * Schemas with different types of composition for testing models generation
+ *
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
 import { HttpHeaders, HttpParams, HttpParameterCodec } from '@angular/common/http';
 import { CustomHttpParameterCodec } from './encoder';
 import { Configuration } from './configuration';
diff --git a/samples/client/petstore/typescript-angular-v12-oneOf/builds/default/api.base.service.ts b/samples/client/petstore/typescript-angular-v12-oneOf/builds/default/api.base.service.ts
index 82eaead92fe..14cc2405f03 100644
--- a/samples/client/petstore/typescript-angular-v12-oneOf/builds/default/api.base.service.ts
+++ b/samples/client/petstore/typescript-angular-v12-oneOf/builds/default/api.base.service.ts
@@ -1,3 +1,12 @@
+/**
+ * fruity
+ *
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
 import { HttpHeaders, HttpParams, HttpParameterCodec } from '@angular/common/http';
 import { CustomHttpParameterCodec } from './encoder';
 import { Configuration } from './configuration';
diff --git a/samples/client/petstore/typescript-angular-v12-provided-in-any/builds/default/api.base.service.ts b/samples/client/petstore/typescript-angular-v12-provided-in-any/builds/default/api.base.service.ts
index 0743145a27c..c81bd085271 100644
--- a/samples/client/petstore/typescript-angular-v12-provided-in-any/builds/default/api.base.service.ts
+++ b/samples/client/petstore/typescript-angular-v12-provided-in-any/builds/default/api.base.service.ts
@@ -1,3 +1,12 @@
+/**
+ * OpenAPI Petstore
+ *
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
 import { HttpHeaders, HttpParams, HttpParameterCodec } from '@angular/common/http';
 import { CustomHttpParameterCodec } from './encoder';
 import { Configuration } from './configuration';
diff --git a/samples/client/petstore/typescript-angular-v12-provided-in-root/builds/default/api.base.service.ts b/samples/client/petstore/typescript-angular-v12-provided-in-root/builds/default/api.base.service.ts
index 0743145a27c..c81bd085271 100644
--- a/samples/client/petstore/typescript-angular-v12-provided-in-root/builds/default/api.base.service.ts
+++ b/samples/client/petstore/typescript-angular-v12-provided-in-root/builds/default/api.base.service.ts
@@ -1,3 +1,12 @@
+/**
+ * OpenAPI Petstore
+ *
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
 import { HttpHeaders, HttpParams, HttpParameterCodec } from '@angular/common/http';
 import { CustomHttpParameterCodec } from './encoder';
 import { Configuration } from './configuration';
diff --git a/samples/client/petstore/typescript-angular-v12-provided-in-root/builds/with-npm/api.base.service.ts b/samples/client/petstore/typescript-angular-v12-provided-in-root/builds/with-npm/api.base.service.ts
index 0743145a27c..c81bd085271 100644
--- a/samples/client/petstore/typescript-angular-v12-provided-in-root/builds/with-npm/api.base.service.ts
+++ b/samples/client/petstore/typescript-angular-v12-provided-in-root/builds/with-npm/api.base.service.ts
@@ -1,3 +1,12 @@
+/**
+ * OpenAPI Petstore
+ *
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
 import { HttpHeaders, HttpParams, HttpParameterCodec } from '@angular/common/http';
 import { CustomHttpParameterCodec } from './encoder';
 import { Configuration } from './configuration';
diff --git a/samples/client/petstore/typescript-angular-v13-oneOf/builds/default/api.base.service.ts b/samples/client/petstore/typescript-angular-v13-oneOf/builds/default/api.base.service.ts
index 82eaead92fe..14cc2405f03 100644
--- a/samples/client/petstore/typescript-angular-v13-oneOf/builds/default/api.base.service.ts
+++ b/samples/client/petstore/typescript-angular-v13-oneOf/builds/default/api.base.service.ts
@@ -1,3 +1,12 @@
+/**
+ * fruity
+ *
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
 import { HttpHeaders, HttpParams, HttpParameterCodec } from '@angular/common/http';
 import { CustomHttpParameterCodec } from './encoder';
 import { Configuration } from './configuration';
diff --git a/samples/client/petstore/typescript-angular-v13-provided-in-any/builds/default/api.base.service.ts b/samples/client/petstore/typescript-angular-v13-provided-in-any/builds/default/api.base.service.ts
index 0743145a27c..c81bd085271 100644
--- a/samples/client/petstore/typescript-angular-v13-provided-in-any/builds/default/api.base.service.ts
+++ b/samples/client/petstore/typescript-angular-v13-provided-in-any/builds/default/api.base.service.ts
@@ -1,3 +1,12 @@
+/**
+ * OpenAPI Petstore
+ *
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
 import { HttpHeaders, HttpParams, HttpParameterCodec } from '@angular/common/http';
 import { CustomHttpParameterCodec } from './encoder';
 import { Configuration } from './configuration';
diff --git a/samples/client/petstore/typescript-angular-v13-provided-in-root/builds/default/api.base.service.ts b/samples/client/petstore/typescript-angular-v13-provided-in-root/builds/default/api.base.service.ts
index 0743145a27c..c81bd085271 100644
--- a/samples/client/petstore/typescript-angular-v13-provided-in-root/builds/default/api.base.service.ts
+++ b/samples/client/petstore/typescript-angular-v13-provided-in-root/builds/default/api.base.service.ts
@@ -1,3 +1,12 @@
+/**
+ * OpenAPI Petstore
+ *
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
 import { HttpHeaders, HttpParams, HttpParameterCodec } from '@angular/common/http';
 import { CustomHttpParameterCodec } from './encoder';
 import { Configuration } from './configuration';
diff --git a/samples/client/petstore/typescript-angular-v13-provided-in-root/builds/with-npm/api.base.service.ts b/samples/client/petstore/typescript-angular-v13-provided-in-root/builds/with-npm/api.base.service.ts
index 0743145a27c..c81bd085271 100644
--- a/samples/client/petstore/typescript-angular-v13-provided-in-root/builds/with-npm/api.base.service.ts
+++ b/samples/client/petstore/typescript-angular-v13-provided-in-root/builds/with-npm/api.base.service.ts
@@ -1,3 +1,12 @@
+/**
+ * OpenAPI Petstore
+ *
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
 import { HttpHeaders, HttpParams, HttpParameterCodec } from '@angular/common/http';
 import { CustomHttpParameterCodec } from './encoder';
 import { Configuration } from './configuration';
diff --git a/samples/client/petstore/typescript-angular-v14-provided-in-root/builds/default/api.base.service.ts b/samples/client/petstore/typescript-angular-v14-provided-in-root/builds/default/api.base.service.ts
index 0743145a27c..c81bd085271 100644
--- a/samples/client/petstore/typescript-angular-v14-provided-in-root/builds/default/api.base.service.ts
+++ b/samples/client/petstore/typescript-angular-v14-provided-in-root/builds/default/api.base.service.ts
@@ -1,3 +1,12 @@
+/**
+ * OpenAPI Petstore
+ *
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
 import { HttpHeaders, HttpParams, HttpParameterCodec } from '@angular/common/http';
 import { CustomHttpParameterCodec } from './encoder';
 import { Configuration } from './configuration';
diff --git a/samples/client/petstore/typescript-angular-v14-query-param-object-format/api.base.service.ts b/samples/client/petstore/typescript-angular-v14-query-param-object-format/api.base.service.ts
index 0743145a27c..c81bd085271 100644
--- a/samples/client/petstore/typescript-angular-v14-query-param-object-format/api.base.service.ts
+++ b/samples/client/petstore/typescript-angular-v14-query-param-object-format/api.base.service.ts
@@ -1,3 +1,12 @@
+/**
+ * OpenAPI Petstore
+ *
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
 import { HttpHeaders, HttpParams, HttpParameterCodec } from '@angular/common/http';
 import { CustomHttpParameterCodec } from './encoder';
 import { Configuration } from './configuration';
diff --git a/samples/client/petstore/typescript-angular-v15-provided-in-root/builds/default/api.base.service.ts b/samples/client/petstore/typescript-angular-v15-provided-in-root/builds/default/api.base.service.ts
index 0743145a27c..c81bd085271 100644
--- a/samples/client/petstore/typescript-angular-v15-provided-in-root/builds/default/api.base.service.ts
+++ b/samples/client/petstore/typescript-angular-v15-provided-in-root/builds/default/api.base.service.ts
@@ -1,3 +1,12 @@
+/**
+ * OpenAPI Petstore
+ *
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
 import { HttpHeaders, HttpParams, HttpParameterCodec } from '@angular/common/http';
 import { CustomHttpParameterCodec } from './encoder';
 import { Configuration } from './configuration';
diff --git a/samples/client/petstore/typescript-angular-v16-provided-in-root/builds/default/api.base.service.ts b/samples/client/petstore/typescript-angular-v16-provided-in-root/builds/default/api.base.service.ts
index 0743145a27c..c81bd085271 100644
--- a/samples/client/petstore/typescript-angular-v16-provided-in-root/builds/default/api.base.service.ts
+++ b/samples/client/petstore/typescript-angular-v16-provided-in-root/builds/default/api.base.service.ts
@@ -1,3 +1,12 @@
+/**
+ * OpenAPI Petstore
+ *
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
 import { HttpHeaders, HttpParams, HttpParameterCodec } from '@angular/common/http';
 import { CustomHttpParameterCodec } from './encoder';
 import { Configuration } from './configuration';
diff --git a/samples/client/petstore/typescript-angular-v17-provided-in-root/builds/default/api.base.service.ts b/samples/client/petstore/typescript-angular-v17-provided-in-root/builds/default/api.base.service.ts
index 0743145a27c..c81bd085271 100644
--- a/samples/client/petstore/typescript-angular-v17-provided-in-root/builds/default/api.base.service.ts
+++ b/samples/client/petstore/typescript-angular-v17-provided-in-root/builds/default/api.base.service.ts
@@ -1,3 +1,12 @@
+/**
+ * OpenAPI Petstore
+ *
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
 import { HttpHeaders, HttpParams, HttpParameterCodec } from '@angular/common/http';
 import { CustomHttpParameterCodec } from './encoder';
 import { Configuration } from './configuration';
diff --git a/samples/client/petstore/typescript-angular-v18-provided-in-root/builds/default/api.base.service.ts b/samples/client/petstore/typescript-angular-v18-provided-in-root/builds/default/api.base.service.ts
index 0743145a27c..c81bd085271 100644
--- a/samples/client/petstore/typescript-angular-v18-provided-in-root/builds/default/api.base.service.ts
+++ b/samples/client/petstore/typescript-angular-v18-provided-in-root/builds/default/api.base.service.ts
@@ -1,3 +1,12 @@
+/**
+ * OpenAPI Petstore
+ *
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
 import { HttpHeaders, HttpParams, HttpParameterCodec } from '@angular/common/http';
 import { CustomHttpParameterCodec } from './encoder';
 import { Configuration } from './configuration';
diff --git a/samples/client/petstore/typescript-angular-v19-with-angular-dependency-params/builds/default/api.base.service.ts b/samples/client/petstore/typescript-angular-v19-with-angular-dependency-params/builds/default/api.base.service.ts
index 0743145a27c..c81bd085271 100644
--- a/samples/client/petstore/typescript-angular-v19-with-angular-dependency-params/builds/default/api.base.service.ts
+++ b/samples/client/petstore/typescript-angular-v19-with-angular-dependency-params/builds/default/api.base.service.ts
@@ -1,3 +1,12 @@
+/**
+ * OpenAPI Petstore
+ *
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
 import { HttpHeaders, HttpParams, HttpParameterCodec } from '@angular/common/http';
 import { CustomHttpParameterCodec } from './encoder';
 import { Configuration } from './configuration';
diff --git a/samples/client/petstore/typescript-angular-v19/builds/default/api.base.service.ts b/samples/client/petstore/typescript-angular-v19/builds/default/api.base.service.ts
index 0743145a27c..c81bd085271 100644
--- a/samples/client/petstore/typescript-angular-v19/builds/default/api.base.service.ts
+++ b/samples/client/petstore/typescript-angular-v19/builds/default/api.base.service.ts
@@ -1,3 +1,12 @@
+/**
+ * OpenAPI Petstore
+ *
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
 import { HttpHeaders, HttpParams, HttpParameterCodec } from '@angular/common/http';
 import { CustomHttpParameterCodec } from './encoder';
 import { Configuration } from './configuration';