add argumentnullexception (#8880)

Author: gewarren

xml/Microsoft.Extensions.DependencyInjection/ActivatorUtilities.xml

@@ -161,10 +161,11 @@
       <Docs>
         <param name="provider">The service provider used to resolve dependencies.</param>
         <param name="instanceType">The type to activate.</param>
-        <param name="parameters">Constructor arguments not provided by the <paramref name="provider" />.</param>
-        <summary>Instantiate a type with constructor arguments provided directly and/or from an <see cref="T:System.IServiceProvider" />.</summary>
+        <param name="parameters">Constructor arguments that aren't provided by <paramref name="provider" />.</param>
+        <summary>Instantiates a type with constructor arguments provided directly or from an <see cref="T:System.IServiceProvider" />.</summary>
         <returns>The activated object.</returns>
         <remarks>To be added.</remarks>
+        <exception cref="T:System.ArgumentNullException">.NET 8 and later only: <paramref name="provider" /> is <see langword="null" />.</exception>
       </Docs>
     </Member>
     <Member MemberName="CreateInstance&lt;T&gt;">
@@ -216,10 +217,11 @@
       <Docs>
         <typeparam name="T">The type to activate.</typeparam>
         <param name="provider">The service provider used to resolve dependencies.</param>
-        <param name="parameters">Constructor arguments not provided by the <paramref name="provider" />.</param>
-        <summary>Instantiate a type with constructor arguments provided directly and/or from an <see cref="T:System.IServiceProvider" />.</summary>
+        <param name="parameters">Constructor arguments that aren't provided by <paramref name="provider" />.</param>
+        <summary>Instantiates a type with constructor arguments provided directly or from an <see cref="T:System.IServiceProvider" />.</summary>
         <returns>The activated object.</returns>
         <remarks>To be added.</remarks>
+        <exception cref="T:System.ArgumentNullException">.NET 8 and later only: <paramref name="provider" /> is <see langword="null" />.</exception>
       </Docs>
     </Member>
     <Member MemberName="GetServiceOrCreateInstance">