Use ArgumentNullException.ThrowIfNull for NET8.0_OR_GREATER

Copilot · jmprieur · Copilot · commit 0445f82537fb · 2025-09-30T22:08:59.000Z
Co-authored-by: jmprieur &lt;13203188+jmprieur@users.noreply.github.com&gt;
diff --git a/src/Microsoft.Identity.Abstractions/DownstreamApi/AuthorizationHeaderResult.cs b/src/Microsoft.Identity.Abstractions/DownstreamApi/AuthorizationHeaderResult.cs
@@ -104,10 +104,14 @@ public AuthorizationHeaderResult(AuthorizationHeaderInformation? info, Authoriza
         /// </remarks>
         public static implicit operator string(AuthorizationHeaderResult result)
         {
+#if NET8_0_OR_GREATER
+            ArgumentNullException.ThrowIfNull(result);
+#else
             if (result is null)
             {
                 throw new ArgumentNullException(nameof(result));
             }
+#endif
 
             if (!result.Succeeded)
             {

Original file line number	Diff line number	Diff line change
`@@ -104,10 +104,14 @@ public AuthorizationHeaderResult(AuthorizationHeaderInformation? info, Authoriza`
`104`	`104`	`/// </remarks>`
`105`	`105`	`public static implicit operator string(AuthorizationHeaderResult result)`
`106`	`106`	`{`
	`107`	`+#if NET8_0_OR_GREATER`
	`108`	`+ ArgumentNullException.ThrowIfNull(result);`
	`109`	`+#else`
`107`	`110`	`if (result is null)`
`108`	`111`	`{`
`109`	`112`	`throw new ArgumentNullException(nameof(result));`
`110`	`113`	`}`
	`114`	`+#endif`
`111`	`115`
`112`	`116`	`if (!result.Succeeded)`
`113`	`117`	`{`