From 696442c6787e01f54852300aad306b8ecdbe5b61 Mon Sep 17 00:00:00 2001
From: Phil Thomas <2487390+filiptc@users.noreply.github.com>
Date: Thu, 17 Apr 2025 21:58:50 +0200
Subject: [PATCH] chore: regenerate samples.

---
 .../api.base.service.ts                             | 13 +++++++++++--
 .../builds/composed-schemas/api.base.service.ts     | 13 +++++++++++--
 .../builds/default/api.base.service.ts              | 13 +++++++++++--
 .../builds/default/api.base.service.ts              | 13 +++++++++++--
 .../builds/default/api.base.service.ts              | 13 +++++++++++--
 .../builds/with-npm/api.base.service.ts             | 13 +++++++++++--
 .../builds/default/api.base.service.ts              | 13 +++++++++++--
 .../builds/default/api.base.service.ts              | 13 +++++++++++--
 .../builds/default/api.base.service.ts              | 13 +++++++++++--
 .../builds/with-npm/api.base.service.ts             | 13 +++++++++++--
 .../builds/default/api.base.service.ts              | 13 +++++++++++--
 .../api.base.service.ts                             | 13 +++++++++++--
 .../builds/default/api.base.service.ts              | 13 +++++++++++--
 .../builds/default/api.base.service.ts              | 13 +++++++++++--
 .../builds/default/api.base.service.ts              | 13 +++++++++++--
 .../builds/default/api.base.service.ts              | 13 +++++++++++--
 .../builds/default/api.base.service.ts              | 13 +++++++++++--
 .../builds/default/api.base.service.ts              | 13 +++++++++++--
 18 files changed, 198 insertions(+), 36 deletions(-)

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 8184ceb97294..2eef83787982 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
@@ -28,21 +28,30 @@ export class BaseService {
         return consumes.indexOf('multipart/form-data') !== -1;
     }
 
-    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string): HttpParams {
+    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string, isDeep?: boolean): HttpParams {
         // If the value is an object (but not a Date), recursively add its keys.
         if (typeof value === 'object' && !(value instanceof Date)) {
+            if (isDeep) {
+                return this.addToHttpParamsRecursive(httpParams, value, key, isDeep);
+            }
             return this.addToHttpParamsRecursive(httpParams, value);
         }
         return this.addToHttpParamsRecursive(httpParams, value, key);
     }
 
-    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string): HttpParams {
+    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string, isDeep?: boolean): HttpParams {
         if (value === null || value === undefined) {
             return httpParams;
         }
         if (typeof value === 'object') {
             // If JSON format is preferred, key must be provided.
             if (key != null) {
+                if (isDeep) {
+                    return Object.entries(value as Record<string, any>).reduce(
+                        (hp, [k, v]) => hp.append(`${key}[${k}]`, v),
+                        httpParams,
+                    );
+                }
                 return httpParams.append(key, JSON.stringify(value));
             }
             // Otherwise, if it's an array, add each element.
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 8184ceb97294..2eef83787982 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
@@ -28,21 +28,30 @@ export class BaseService {
         return consumes.indexOf('multipart/form-data') !== -1;
     }
 
-    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string): HttpParams {
+    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string, isDeep?: boolean): HttpParams {
         // If the value is an object (but not a Date), recursively add its keys.
         if (typeof value === 'object' && !(value instanceof Date)) {
+            if (isDeep) {
+                return this.addToHttpParamsRecursive(httpParams, value, key, isDeep);
+            }
             return this.addToHttpParamsRecursive(httpParams, value);
         }
         return this.addToHttpParamsRecursive(httpParams, value, key);
     }
 
-    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string): HttpParams {
+    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string, isDeep?: boolean): HttpParams {
         if (value === null || value === undefined) {
             return httpParams;
         }
         if (typeof value === 'object') {
             // If JSON format is preferred, key must be provided.
             if (key != null) {
+                if (isDeep) {
+                    return Object.entries(value as Record<string, any>).reduce(
+                        (hp, [k, v]) => hp.append(`${key}[${k}]`, v),
+                        httpParams,
+                    );
+                }
                 return httpParams.append(key, JSON.stringify(value));
             }
             // Otherwise, if it's an array, add each element.
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 82eaead92fe9..526f07d5edcb 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
@@ -28,21 +28,30 @@ export class BaseService {
         return consumes.indexOf('multipart/form-data') !== -1;
     }
 
-    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string): HttpParams {
+    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string, isDeep?: boolean): HttpParams {
         // If the value is an object (but not a Date), recursively add its keys.
         if (typeof value === 'object' && !(value instanceof Date)) {
+            if (isDeep) {
+                return this.addToHttpParamsRecursive(httpParams, value, key, isDeep);
+            }
             return this.addToHttpParamsRecursive(httpParams, value);
         }
         return this.addToHttpParamsRecursive(httpParams, value, key);
     }
 
-    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string): HttpParams {
+    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string, isDeep?: boolean): HttpParams {
         if (value === null || value === undefined) {
             return httpParams;
         }
         if (typeof value === 'object') {
             // If JSON format is preferred, key must be provided.
             if (key != null) {
+                if (isDeep) {
+                    return Object.entries(value as Record<string, any>).reduce(
+                        (hp, [k, v]) => hp.append(`${key}[${k}]`, v),
+                        httpParams,
+                    );
+                }
                 return httpParams.append(key, JSON.stringify(value));
             }
             // Otherwise, if it's an array, add each element.
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 0743145a27c2..c26642c0591f 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
@@ -28,21 +28,30 @@ export class BaseService {
         return consumes.indexOf('multipart/form-data') !== -1;
     }
 
-    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string): HttpParams {
+    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string, isDeep?: boolean): HttpParams {
         // If the value is an object (but not a Date), recursively add its keys.
         if (typeof value === 'object' && !(value instanceof Date)) {
+            if (isDeep) {
+                return this.addToHttpParamsRecursive(httpParams, value, key, isDeep);
+            }
             return this.addToHttpParamsRecursive(httpParams, value);
         }
         return this.addToHttpParamsRecursive(httpParams, value, key);
     }
 
-    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string): HttpParams {
+    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string, isDeep?: boolean): HttpParams {
         if (value === null || value === undefined) {
             return httpParams;
         }
         if (typeof value === 'object') {
             // If JSON format is preferred, key must be provided.
             if (key != null) {
+                if (isDeep) {
+                    return Object.entries(value as Record<string, any>).reduce(
+                        (hp, [k, v]) => hp.append(`${key}[${k}]`, v),
+                        httpParams,
+                    );
+                }
                 return httpParams.append(key, JSON.stringify(value));
             }
             // Otherwise, if it's an array, add each element.
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 0743145a27c2..c26642c0591f 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
@@ -28,21 +28,30 @@ export class BaseService {
         return consumes.indexOf('multipart/form-data') !== -1;
     }
 
-    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string): HttpParams {
+    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string, isDeep?: boolean): HttpParams {
         // If the value is an object (but not a Date), recursively add its keys.
         if (typeof value === 'object' && !(value instanceof Date)) {
+            if (isDeep) {
+                return this.addToHttpParamsRecursive(httpParams, value, key, isDeep);
+            }
             return this.addToHttpParamsRecursive(httpParams, value);
         }
         return this.addToHttpParamsRecursive(httpParams, value, key);
     }
 
-    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string): HttpParams {
+    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string, isDeep?: boolean): HttpParams {
         if (value === null || value === undefined) {
             return httpParams;
         }
         if (typeof value === 'object') {
             // If JSON format is preferred, key must be provided.
             if (key != null) {
+                if (isDeep) {
+                    return Object.entries(value as Record<string, any>).reduce(
+                        (hp, [k, v]) => hp.append(`${key}[${k}]`, v),
+                        httpParams,
+                    );
+                }
                 return httpParams.append(key, JSON.stringify(value));
             }
             // Otherwise, if it's an array, add each element.
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 0743145a27c2..c26642c0591f 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
@@ -28,21 +28,30 @@ export class BaseService {
         return consumes.indexOf('multipart/form-data') !== -1;
     }
 
-    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string): HttpParams {
+    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string, isDeep?: boolean): HttpParams {
         // If the value is an object (but not a Date), recursively add its keys.
         if (typeof value === 'object' && !(value instanceof Date)) {
+            if (isDeep) {
+                return this.addToHttpParamsRecursive(httpParams, value, key, isDeep);
+            }
             return this.addToHttpParamsRecursive(httpParams, value);
         }
         return this.addToHttpParamsRecursive(httpParams, value, key);
     }
 
-    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string): HttpParams {
+    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string, isDeep?: boolean): HttpParams {
         if (value === null || value === undefined) {
             return httpParams;
         }
         if (typeof value === 'object') {
             // If JSON format is preferred, key must be provided.
             if (key != null) {
+                if (isDeep) {
+                    return Object.entries(value as Record<string, any>).reduce(
+                        (hp, [k, v]) => hp.append(`${key}[${k}]`, v),
+                        httpParams,
+                    );
+                }
                 return httpParams.append(key, JSON.stringify(value));
             }
             // Otherwise, if it's an array, add each element.
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 82eaead92fe9..526f07d5edcb 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
@@ -28,21 +28,30 @@ export class BaseService {
         return consumes.indexOf('multipart/form-data') !== -1;
     }
 
-    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string): HttpParams {
+    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string, isDeep?: boolean): HttpParams {
         // If the value is an object (but not a Date), recursively add its keys.
         if (typeof value === 'object' && !(value instanceof Date)) {
+            if (isDeep) {
+                return this.addToHttpParamsRecursive(httpParams, value, key, isDeep);
+            }
             return this.addToHttpParamsRecursive(httpParams, value);
         }
         return this.addToHttpParamsRecursive(httpParams, value, key);
     }
 
-    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string): HttpParams {
+    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string, isDeep?: boolean): HttpParams {
         if (value === null || value === undefined) {
             return httpParams;
         }
         if (typeof value === 'object') {
             // If JSON format is preferred, key must be provided.
             if (key != null) {
+                if (isDeep) {
+                    return Object.entries(value as Record<string, any>).reduce(
+                        (hp, [k, v]) => hp.append(`${key}[${k}]`, v),
+                        httpParams,
+                    );
+                }
                 return httpParams.append(key, JSON.stringify(value));
             }
             // Otherwise, if it's an array, add each element.
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 0743145a27c2..c26642c0591f 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
@@ -28,21 +28,30 @@ export class BaseService {
         return consumes.indexOf('multipart/form-data') !== -1;
     }
 
-    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string): HttpParams {
+    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string, isDeep?: boolean): HttpParams {
         // If the value is an object (but not a Date), recursively add its keys.
         if (typeof value === 'object' && !(value instanceof Date)) {
+            if (isDeep) {
+                return this.addToHttpParamsRecursive(httpParams, value, key, isDeep);
+            }
             return this.addToHttpParamsRecursive(httpParams, value);
         }
         return this.addToHttpParamsRecursive(httpParams, value, key);
     }
 
-    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string): HttpParams {
+    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string, isDeep?: boolean): HttpParams {
         if (value === null || value === undefined) {
             return httpParams;
         }
         if (typeof value === 'object') {
             // If JSON format is preferred, key must be provided.
             if (key != null) {
+                if (isDeep) {
+                    return Object.entries(value as Record<string, any>).reduce(
+                        (hp, [k, v]) => hp.append(`${key}[${k}]`, v),
+                        httpParams,
+                    );
+                }
                 return httpParams.append(key, JSON.stringify(value));
             }
             // Otherwise, if it's an array, add each element.
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 0743145a27c2..c26642c0591f 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
@@ -28,21 +28,30 @@ export class BaseService {
         return consumes.indexOf('multipart/form-data') !== -1;
     }
 
-    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string): HttpParams {
+    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string, isDeep?: boolean): HttpParams {
         // If the value is an object (but not a Date), recursively add its keys.
         if (typeof value === 'object' && !(value instanceof Date)) {
+            if (isDeep) {
+                return this.addToHttpParamsRecursive(httpParams, value, key, isDeep);
+            }
             return this.addToHttpParamsRecursive(httpParams, value);
         }
         return this.addToHttpParamsRecursive(httpParams, value, key);
     }
 
-    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string): HttpParams {
+    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string, isDeep?: boolean): HttpParams {
         if (value === null || value === undefined) {
             return httpParams;
         }
         if (typeof value === 'object') {
             // If JSON format is preferred, key must be provided.
             if (key != null) {
+                if (isDeep) {
+                    return Object.entries(value as Record<string, any>).reduce(
+                        (hp, [k, v]) => hp.append(`${key}[${k}]`, v),
+                        httpParams,
+                    );
+                }
                 return httpParams.append(key, JSON.stringify(value));
             }
             // Otherwise, if it's an array, add each element.
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 0743145a27c2..c26642c0591f 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
@@ -28,21 +28,30 @@ export class BaseService {
         return consumes.indexOf('multipart/form-data') !== -1;
     }
 
-    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string): HttpParams {
+    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string, isDeep?: boolean): HttpParams {
         // If the value is an object (but not a Date), recursively add its keys.
         if (typeof value === 'object' && !(value instanceof Date)) {
+            if (isDeep) {
+                return this.addToHttpParamsRecursive(httpParams, value, key, isDeep);
+            }
             return this.addToHttpParamsRecursive(httpParams, value);
         }
         return this.addToHttpParamsRecursive(httpParams, value, key);
     }
 
-    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string): HttpParams {
+    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string, isDeep?: boolean): HttpParams {
         if (value === null || value === undefined) {
             return httpParams;
         }
         if (typeof value === 'object') {
             // If JSON format is preferred, key must be provided.
             if (key != null) {
+                if (isDeep) {
+                    return Object.entries(value as Record<string, any>).reduce(
+                        (hp, [k, v]) => hp.append(`${key}[${k}]`, v),
+                        httpParams,
+                    );
+                }
                 return httpParams.append(key, JSON.stringify(value));
             }
             // Otherwise, if it's an array, add each element.
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 0743145a27c2..c26642c0591f 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
@@ -28,21 +28,30 @@ export class BaseService {
         return consumes.indexOf('multipart/form-data') !== -1;
     }
 
-    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string): HttpParams {
+    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string, isDeep?: boolean): HttpParams {
         // If the value is an object (but not a Date), recursively add its keys.
         if (typeof value === 'object' && !(value instanceof Date)) {
+            if (isDeep) {
+                return this.addToHttpParamsRecursive(httpParams, value, key, isDeep);
+            }
             return this.addToHttpParamsRecursive(httpParams, value);
         }
         return this.addToHttpParamsRecursive(httpParams, value, key);
     }
 
-    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string): HttpParams {
+    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string, isDeep?: boolean): HttpParams {
         if (value === null || value === undefined) {
             return httpParams;
         }
         if (typeof value === 'object') {
             // If JSON format is preferred, key must be provided.
             if (key != null) {
+                if (isDeep) {
+                    return Object.entries(value as Record<string, any>).reduce(
+                        (hp, [k, v]) => hp.append(`${key}[${k}]`, v),
+                        httpParams,
+                    );
+                }
                 return httpParams.append(key, JSON.stringify(value));
             }
             // Otherwise, if it's an array, add each element.
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 0743145a27c2..c26642c0591f 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
@@ -28,21 +28,30 @@ export class BaseService {
         return consumes.indexOf('multipart/form-data') !== -1;
     }
 
-    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string): HttpParams {
+    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string, isDeep?: boolean): HttpParams {
         // If the value is an object (but not a Date), recursively add its keys.
         if (typeof value === 'object' && !(value instanceof Date)) {
+            if (isDeep) {
+                return this.addToHttpParamsRecursive(httpParams, value, key, isDeep);
+            }
             return this.addToHttpParamsRecursive(httpParams, value);
         }
         return this.addToHttpParamsRecursive(httpParams, value, key);
     }
 
-    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string): HttpParams {
+    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string, isDeep?: boolean): HttpParams {
         if (value === null || value === undefined) {
             return httpParams;
         }
         if (typeof value === 'object') {
             // If JSON format is preferred, key must be provided.
             if (key != null) {
+                if (isDeep) {
+                    return Object.entries(value as Record<string, any>).reduce(
+                        (hp, [k, v]) => hp.append(`${key}[${k}]`, v),
+                        httpParams,
+                    );
+                }
                 return httpParams.append(key, JSON.stringify(value));
             }
             // Otherwise, if it's an array, add each element.
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 0743145a27c2..c26642c0591f 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
@@ -28,21 +28,30 @@ export class BaseService {
         return consumes.indexOf('multipart/form-data') !== -1;
     }
 
-    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string): HttpParams {
+    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string, isDeep?: boolean): HttpParams {
         // If the value is an object (but not a Date), recursively add its keys.
         if (typeof value === 'object' && !(value instanceof Date)) {
+            if (isDeep) {
+                return this.addToHttpParamsRecursive(httpParams, value, key, isDeep);
+            }
             return this.addToHttpParamsRecursive(httpParams, value);
         }
         return this.addToHttpParamsRecursive(httpParams, value, key);
     }
 
-    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string): HttpParams {
+    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string, isDeep?: boolean): HttpParams {
         if (value === null || value === undefined) {
             return httpParams;
         }
         if (typeof value === 'object') {
             // If JSON format is preferred, key must be provided.
             if (key != null) {
+                if (isDeep) {
+                    return Object.entries(value as Record<string, any>).reduce(
+                        (hp, [k, v]) => hp.append(`${key}[${k}]`, v),
+                        httpParams,
+                    );
+                }
                 return httpParams.append(key, JSON.stringify(value));
             }
             // Otherwise, if it's an array, add each element.
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 0743145a27c2..c26642c0591f 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
@@ -28,21 +28,30 @@ export class BaseService {
         return consumes.indexOf('multipart/form-data') !== -1;
     }
 
-    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string): HttpParams {
+    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string, isDeep?: boolean): HttpParams {
         // If the value is an object (but not a Date), recursively add its keys.
         if (typeof value === 'object' && !(value instanceof Date)) {
+            if (isDeep) {
+                return this.addToHttpParamsRecursive(httpParams, value, key, isDeep);
+            }
             return this.addToHttpParamsRecursive(httpParams, value);
         }
         return this.addToHttpParamsRecursive(httpParams, value, key);
     }
 
-    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string): HttpParams {
+    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string, isDeep?: boolean): HttpParams {
         if (value === null || value === undefined) {
             return httpParams;
         }
         if (typeof value === 'object') {
             // If JSON format is preferred, key must be provided.
             if (key != null) {
+                if (isDeep) {
+                    return Object.entries(value as Record<string, any>).reduce(
+                        (hp, [k, v]) => hp.append(`${key}[${k}]`, v),
+                        httpParams,
+                    );
+                }
                 return httpParams.append(key, JSON.stringify(value));
             }
             // Otherwise, if it's an array, add each element.
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 0743145a27c2..c26642c0591f 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
@@ -28,21 +28,30 @@ export class BaseService {
         return consumes.indexOf('multipart/form-data') !== -1;
     }
 
-    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string): HttpParams {
+    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string, isDeep?: boolean): HttpParams {
         // If the value is an object (but not a Date), recursively add its keys.
         if (typeof value === 'object' && !(value instanceof Date)) {
+            if (isDeep) {
+                return this.addToHttpParamsRecursive(httpParams, value, key, isDeep);
+            }
             return this.addToHttpParamsRecursive(httpParams, value);
         }
         return this.addToHttpParamsRecursive(httpParams, value, key);
     }
 
-    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string): HttpParams {
+    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string, isDeep?: boolean): HttpParams {
         if (value === null || value === undefined) {
             return httpParams;
         }
         if (typeof value === 'object') {
             // If JSON format is preferred, key must be provided.
             if (key != null) {
+                if (isDeep) {
+                    return Object.entries(value as Record<string, any>).reduce(
+                        (hp, [k, v]) => hp.append(`${key}[${k}]`, v),
+                        httpParams,
+                    );
+                }
                 return httpParams.append(key, JSON.stringify(value));
             }
             // Otherwise, if it's an array, add each element.
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 0743145a27c2..c26642c0591f 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
@@ -28,21 +28,30 @@ export class BaseService {
         return consumes.indexOf('multipart/form-data') !== -1;
     }
 
-    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string): HttpParams {
+    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string, isDeep?: boolean): HttpParams {
         // If the value is an object (but not a Date), recursively add its keys.
         if (typeof value === 'object' && !(value instanceof Date)) {
+            if (isDeep) {
+                return this.addToHttpParamsRecursive(httpParams, value, key, isDeep);
+            }
             return this.addToHttpParamsRecursive(httpParams, value);
         }
         return this.addToHttpParamsRecursive(httpParams, value, key);
     }
 
-    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string): HttpParams {
+    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string, isDeep?: boolean): HttpParams {
         if (value === null || value === undefined) {
             return httpParams;
         }
         if (typeof value === 'object') {
             // If JSON format is preferred, key must be provided.
             if (key != null) {
+                if (isDeep) {
+                    return Object.entries(value as Record<string, any>).reduce(
+                        (hp, [k, v]) => hp.append(`${key}[${k}]`, v),
+                        httpParams,
+                    );
+                }
                 return httpParams.append(key, JSON.stringify(value));
             }
             // Otherwise, if it's an array, add each element.
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 0743145a27c2..c26642c0591f 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
@@ -28,21 +28,30 @@ export class BaseService {
         return consumes.indexOf('multipart/form-data') !== -1;
     }
 
-    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string): HttpParams {
+    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string, isDeep?: boolean): HttpParams {
         // If the value is an object (but not a Date), recursively add its keys.
         if (typeof value === 'object' && !(value instanceof Date)) {
+            if (isDeep) {
+                return this.addToHttpParamsRecursive(httpParams, value, key, isDeep);
+            }
             return this.addToHttpParamsRecursive(httpParams, value);
         }
         return this.addToHttpParamsRecursive(httpParams, value, key);
     }
 
-    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string): HttpParams {
+    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string, isDeep?: boolean): HttpParams {
         if (value === null || value === undefined) {
             return httpParams;
         }
         if (typeof value === 'object') {
             // If JSON format is preferred, key must be provided.
             if (key != null) {
+                if (isDeep) {
+                    return Object.entries(value as Record<string, any>).reduce(
+                        (hp, [k, v]) => hp.append(`${key}[${k}]`, v),
+                        httpParams,
+                    );
+                }
                 return httpParams.append(key, JSON.stringify(value));
             }
             // Otherwise, if it's an array, add each element.
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 0743145a27c2..c26642c0591f 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
@@ -28,21 +28,30 @@ export class BaseService {
         return consumes.indexOf('multipart/form-data') !== -1;
     }
 
-    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string): HttpParams {
+    protected addToHttpParams(httpParams: HttpParams, value: any, key?: string, isDeep?: boolean): HttpParams {
         // If the value is an object (but not a Date), recursively add its keys.
         if (typeof value === 'object' && !(value instanceof Date)) {
+            if (isDeep) {
+                return this.addToHttpParamsRecursive(httpParams, value, key, isDeep);
+            }
             return this.addToHttpParamsRecursive(httpParams, value);
         }
         return this.addToHttpParamsRecursive(httpParams, value, key);
     }
 
-    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string): HttpParams {
+    protected addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string, isDeep?: boolean): HttpParams {
         if (value === null || value === undefined) {
             return httpParams;
         }
         if (typeof value === 'object') {
             // If JSON format is preferred, key must be provided.
             if (key != null) {
+                if (isDeep) {
+                    return Object.entries(value as Record<string, any>).reduce(
+                        (hp, [k, v]) => hp.append(`${key}[${k}]`, v),
+                        httpParams,
+                    );
+                }
                 return httpParams.append(key, JSON.stringify(value));
             }
             // Otherwise, if it's an array, add each element.