diff --git a/src/Identity/ApiAuthorization.IdentityServer/src/Options/ApiResourceCollection.cs b/src/Identity/ApiAuthorization.IdentityServer/src/Options/ApiResourceCollection.cs
index 38afb60fc705..104df03cbc05 100644
--- a/src/Identity/ApiAuthorization.IdentityServer/src/Options/ApiResourceCollection.cs
+++ b/src/Identity/ApiAuthorization.IdentityServer/src/Options/ApiResourceCollection.cs
@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
@@ -51,18 +51,6 @@ public ApiResource this[string key]
             }
         }
 
-        /// <summary>
-        /// Adds the resources in <paramref name="resources"/> to the collection.
-        /// </summary>
-        /// <param name="resources">The list of <see cref="ApiResource"/> to add.</param>
-        public void AddRange(IEnumerable<ApiResource> resources)
-        {
-            foreach (var resource in resources)
-            {
-                Add(resource);
-            }
-        }
-
         /// <summary>
         /// Adds the resources in <paramref name="resources"/> to the collection.
         /// </summary>
diff --git a/src/Identity/ApiAuthorization.IdentityServer/src/Options/ClientCollection.cs b/src/Identity/ApiAuthorization.IdentityServer/src/Options/ClientCollection.cs
index ffc180bf304c..b34e809eb3bc 100644
--- a/src/Identity/ApiAuthorization.IdentityServer/src/Options/ClientCollection.cs
+++ b/src/Identity/ApiAuthorization.IdentityServer/src/Options/ClientCollection.cs
@@ -51,18 +51,6 @@ public Client this[string key]
             }
         }
 
-        /// <summary>
-        /// Adds the clients in <paramref name="clients"/> to the collection.
-        /// </summary>
-        /// <param name="clients">The list of <see cref="Client"/> to add.</param>
-        public void AddRange(IEnumerable<Client> clients)
-        {
-            foreach (var client in clients)
-            {
-                Add(client);
-            }
-        }
-
         /// <summary>
         /// Adds the clients in <paramref name="clients"/> to the collection.
         /// </summary>
diff --git a/src/Identity/ApiAuthorization.IdentityServer/src/Options/IdentityResourceCollection.cs b/src/Identity/ApiAuthorization.IdentityServer/src/Options/IdentityResourceCollection.cs
index 22aa30344f43..e57358489c65 100644
--- a/src/Identity/ApiAuthorization.IdentityServer/src/Options/IdentityResourceCollection.cs
+++ b/src/Identity/ApiAuthorization.IdentityServer/src/Options/IdentityResourceCollection.cs
@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using IdentityServer4.Models;
@@ -51,18 +51,6 @@ public IdentityResource this[string key]
             }
         }
 
-        /// <summary>
-        /// Adds the identity resources in <paramref name="identityResources"/> to the collection.
-        /// </summary>
-        /// <param name="identityResources">The list of <see cref="IdentityResource"/> to add.</param>
-        public void AddRange(IEnumerable<IdentityResource> identityResources)
-        {
-            foreach (var resource in identityResources)
-            {
-                Add(resource);
-            }
-        }
-
         /// <summary>
         /// Adds the identity resources in <paramref name="identityResources"/> to the collection.
         /// </summary>