PowerShell GMail: Parse GMail REST API Error Response

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Gets the current user's Gmail profile, but shows an error response and how to parse it..

Documentation: https://developers.google.com/gmail/api/v1/reference/users/getProfile

[Reflection.Assembly]::LoadFile("C:\myAssemblies\ChilkatDotNet2.dll")

$rest = New-Object Chilkat.Rest

#   Provide a previously obtained OAuth2 access token.
$oauth2 = New-Object Chilkat.OAuth2
$oauth2.AccessToken = "OAUTH2_ACCESS_TOKEN"
$rest.SetAuthOAuth2($oauth2)

$success = $rest.Connect("www.googleapis.com",443,$true,$true)
if ($success -ne $true) {
    $($rest.LastErrorText)
    exit
}

$rest.AddPathParam("userId","matt@chilkat.io")

$sbJson = New-Object Chilkat.StringBuilder
$success = $rest.FullRequestNoBodySb("GET","/gmail/v1/users/userId/profile",$sbJson)
if ($success -ne $true) {
    $($rest.LastErrorText)
    exit
}

if ($rest.ResponseStatusCode -ne 200) {
    $("Received error response code: " + $rest.ResponseStatusCode)
    $("Response body:")
    $($sbJson.GetAsString())
    exit
}

$json = New-Object Chilkat.JsonObject
$json.LoadSb($sbJson)

#  The following code parses the JSON response.
#  A sample JSON response is shown below the sample code.

$errorCode = $json.IntOf("error.code")
$errorMessage = $json.StringOf("error.message")
$i = 0
$count_i = $json.SizeOfArray("error.errors")
while ($i -lt $count_i) {
    $json.I = $i
    $domain = $json.StringOf("error.errors[i].domain")
    $reason = $json.StringOf("error.errors[i].reason")
    $message = $json.StringOf("error.errors[i].message")
    $extendedHelp = $json.StringOf("error.errors[i].extendedHelp")
    $i = $i + 1
}

$("Example Completed.")

Sample JSON Response Body

{
 "error": {
  "errors": [
   {
    "domain": "usageLimits",
    "reason": "accessNotConfigured",
    "message": "Access Not Configured. Gmail API has not been used in project 377697329735 before or it is disabled. Enable it by visiting https://console.developers.google.com/apis/api/gmail.googleapis.com/overview?project=377697329735 then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry.",
    "extendedHelp": "https://console.developers.google.com/apis/api/gmail.googleapis.com/overview?project=377697329735"
   }
  ],
  "code": 403,
  "message": "Access Not Configured. Gmail API has not been used in project 377697329735 before or it is disabled. Enable it by visiting https://console.developers.google.com/apis/api/gmail.googleapis.com/overview?project=377697329735 then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry."
 }
}