Bug 1824431

Error reads as below when a directory is input:
PS C:\> $Out = Get-AzureSiteRecoveryRecoveryPlanFile -Path C:\Windows
-RecoveryPlan $RPList[0]
Get-AzureSiteRecoveryRecoveryPlanFile : Operation failed.
The input path is a directory. Please provide file path. Check the
examples of commandlets
Parameter name: Path
At line:1 char:8
+ $Out = Get-AzureSiteRecoveryRecoveryPlanFile -Path C:\Windows
-RecoveryPlan $RPL ...
+
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo          : CloseError: (:)
[Get-AzureSiteRecoveryRecoveryPlanFile], Exception
+ FullyQualifiedErrorId :
Microsoft.Azure.Commands.RecoveryServices.GetAzureSiteRecoveryRecoveryPlanFile

Author: geekri

src/ServiceManagement/RecoveryServices/Commands.RecoveryServices/Service/GetAzureSiteRecoveryRecoveryPlanFile.cs

@@ -14,6 +14,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Management.Automation;
 using Microsoft.Azure.Commands.RecoveryServices.SiteRecovery;
 using Microsoft.WindowsAzure.Management.SiteRecovery.Models;
@@ -79,7 +80,12 @@ public override void ExecuteCmdlet()
         /// </summary>
         private void GetRecoveryPlanFile()
         {
-            RecoveryPlanXmlOuput recoveryPlanXmlOuput = 
+            if (Directory.Exists(this.Path))
+            {
+                throw new ArgumentException("The input path is a directory. Please provide file path. Check the examples of the commandlet", "Path");
+            }
+
+            RecoveryPlanXmlOuput recoveryPlanXmlOuput =
                 RecoveryServicesClient.GetAzureSiteRecoveryRecoveryPlanFile(this.Id);
             System.IO.File.WriteAllText(this.Path, recoveryPlanXmlOuput.RecoveryPlanXml);
         }