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diff --git a/src/app/http-interceptors/interceptors.ts b/src/app/http-interceptors/interceptors.ts
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+++ b/src/app/http-interceptors/interceptors.ts
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+/*
+ * Copyright (c) 2022. Deutsche Telekom AG
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+
+/* "Barrel" of Http Interceptors */
+import { HTTP_INTERCEPTORS } from '@angular/common/http';
+import { CachingInterceptor } from './caching-interceptor';
+import { HttpErrorInterceptor } from './http-error.interceptor';
+import { MockInterceptor } from './mock.interceptor';
+import { LoadingIndicatorInterceptor } from 'src/app/http-interceptors/loading-indicator.interceptor';
+import { RequestidInterceptor } from './requestid.interceptor';
+import { TimeoutInterceptor } from './timeout.interceptor';
+import { LoggingInterceptor } from './logging.interceptor';
+
+/** Http interceptor providers in outside-in order
+ *  Gathers all the interceptor providers into an httpInterceptorProviders array
+ */
+// https://angular.io/guide/http#provide-the-interceptor
+export const httpInterceptorProviders = [
+  { provide: HTTP_INTERCEPTORS, useClass: MockInterceptor, multi: true },
+  { provide: HTTP_INTERCEPTORS, useClass: TimeoutInterceptor, multi: true },
+  { provide: HTTP_INTERCEPTORS, useClass: LoadingIndicatorInterceptor, multi: true },
+  { provide: HTTP_INTERCEPTORS, useClass: RequestidInterceptor, multi: true },
+  { provide: HTTP_INTERCEPTORS, useClass: HttpErrorInterceptor, multi: true },
+  { provide: HTTP_INTERCEPTORS, useClass: CachingInterceptor, multi: true },
+  { provide: HTTP_INTERCEPTORS, useClass: LoggingInterceptor, multi: true },
+];