Added more exception handling around CheckNameAvailability

Author: Pooja Adhikari

src/HealthcareApis/HealthcareApis/ChangeLog.md

@@ -23,7 +23,8 @@
 * Added Error Handling in all cmdlets
 * Fixed few typos
 * Enable Set-AzHealthcareApisService to allow updating tags.
-* Fixed bug around inaccurate kind
+* Fixed bug around inaccurate kind.
+* Added Exception Handling around KeyNotFoundException.
 
 ## Version 0.1.0
 * Added following CRUD operation cmdlets to HealthcareApis service. 

src/HealthcareApis/HealthcareApis/HealthcareApis/NewAzureRmHealthcareApisService.cs

@@ -172,11 +172,11 @@ public override void ExecuteCmdlet()
 
                 if (ShouldProcess(this.Name, Resources.createService))
                 {
-
-                    this.EnsureNameAvailabilityOrThrow();
-
                     try
                     {
+
+                        this.EnsureNameAvailabilityOrThrow();
+
                         var createAccountResponse = this.HealthcareApisClient.Services.CreateOrUpdate(
                                         this.ResourceGroupName,
                                         this.Name,