Update ZertoRestRequest and associated Tests

Tests/Public/Invoke-ZertoRestRequest.Tests.ps1

@@ -14,9 +14,7 @@ Describe $global:function -Tag 'Unit', 'Source', 'Built' {
             $ParameterNameTestCases = @(
                 @{ParameterName = "uri"; Type = "String"; Mandatory = $true; DefaultValue = $null; TestName = "URI" }
                 @{ParameterName = "method"; Type = "String"; Mandatory = $false; DefaultValue = 'GET'; TestName = "Method" }
-                @{ParameterName = "apiVersion"; Type = "String"; Mandatory = $false; DefaultValue = 'v1'; TestName = "API Version" }
                 @{ParameterName = "body"; Type = "String"; Mandatory = $false; DefaultValue = $null; TestName = "Body" }
-                @{ParameterName = "contentType"; Type = "String"; Mandatory = $false; DefaultValue = 'application/json'; TestName = "Content Type" }
                 @{ParameterName = "credential"; Type = "PSCredential"; Mandatory = $false; DefaultValue = $null; TestName = "Credential" }
                 @{ParameterName = "returnHeaders"; Type = "Switch"; Mandatory = $false; DefaultValue = $null; TestName = "Return Headers" }
             )
@@ -36,9 +34,7 @@ Describe $global:function -Tag 'Unit', 'Source', 'Built' {
 
             $ParameterValidationTestCases = @(
                 @{ParameterName = "URI"; TestName = "URI" }
-                @{ParameterName = "apiVersion"; TestName = "Api Version" }
                 @{ParameterName = "body"; TestName = "Body" }
-                @{ParameterName = "contentType"; TestName = "Content Type" }
             )
 
             It "<TestName> parameter cannot be null or empty" -TestCases $ParameterValidationTestCases {

ZertoApiWrapper/Public/Invoke-ZertoRestRequest.ps1

@@ -1,20 +1,39 @@
+<# .ExternalHelp ./en-us/ZertoApiWrapper-help.xml #>
 function Invoke-ZertoRestRequest {
     [cmdletbinding()]
     param(
+        # Parameter help description
+        [Parameter(
+            Helpmessage = "API method to be used. GET, PUT, POST, or DELETE. Refer to documentation for the API endpoint to ensure the correct method is being used. If unspecified, defaults to GET"
+        )]
         [ValidateSet("GET", "PUT", "POST", "DELETE")]
         [string]$method = "GET",
-        [Parameter(Mandatory)]
+        [Parameter(
+            Mandatory,
+            Helpmessage = "URI endpoint to be utilized. When submitting the URI, only the endpoint needs to be submitted. Please review the help documentation for examples."
+        )]
         [ValidateNotNullOrEmpty()]
         [string]$uri,
-        [ValidateNotNullOrEmpty()]
-        [string]$apiVersion = "v1",
+        [Parameter(
+            Helpmessage = "Body to be submitted to the REST API endpoint. This needs to be submitted in JSON format"
+        )]
         [ValidateNotNullOrEmpty()]
         [string]$body,
-        [ValidateNotNullOrEmpty()]
-        [string]$contentType = "application/json",
+        [Parameter(
+            Helpmessage = "PSCredential object. This is ONLY used when authenticating with the ZVM. No other endpoints require this and generally is not used."
+        )]
         [PSCredential]$credential,
+        [Parameter(
+            Helpmessage = "Use this switch if you would like the request headers returned along with the body. Useful for troubleshooting to get HTTP error codes."
+        )]
         [switch]$returnHeaders
     )
+    # API version. Currently this is locked at v1 in all versions of Zerto. Should this change, will look
+    # at making this as parameter to be selected during function call.
+    $apiVersion = "v1"
+    # While the API can use XML or JSON, this module is built on JSON functionality. Currently forcing all
+    # content types and language to JSON.
+    $contentType = "application/json"
     $callerErrorActionPreference = $ErrorActionPreference
     # If the ZVM server and Port not defined, Stop Call
     if ( -not ((Test-Path variable:script:zvmServer) -and (Test-Path variable:script:zvmPort)) ) {
@@ -22,7 +41,7 @@ function Invoke-ZertoRestRequest {
     }
 
     # If the Headers exist and the Last action was more than 30 minutes ago, Session is Expired
-    if ( (Test-Path variable:script:zvmHeaders) -and $([datetime]$script:zvmLastAction).addMinutes(30) -lt $(get-date) ) {
+    if ( (Test-Path variable:script:zvmHeaders) -and $([datetime]$script:zvmLastAction).addMinutes(30) -lt $(Get-Date) ) {
         Throw "Authorization Token has Expired. Please re-authorize to the Zerto Virtual Manager"
     } else {
 
@@ -30,7 +49,7 @@ function Invoke-ZertoRestRequest {
         $submittedURI = "https://{0}:{1}/{2}/{3}" -f $script:zvmServer, $script:zvmPort, $apiVersion, $uri
         try {
             # Set the zvmLastAction time and try to submit the REST Request
-            $script:zvmLastAction = (get-date).Ticks
+            $script:zvmLastAction = (Get-Date).Ticks
             # If running PwSh - Use this Invoke-RestMethod with passed Variables
             if ($PSVersionTable.PSVersion.Major -ge 6) {
                 $apiRequestResults = Invoke-RestMethod -Uri $submittedURI -Headers $script:zvmHeaders -Method $method -Body $body -ContentType $contentType -Credential $credential -SkipCertificateCheck -ResponseHeadersVariable responseHeaders -TimeoutSec 100