Perl 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

use chilkat();

$rest = chilkat::CkRest->new();

#   Provide a previously obtained OAuth2 access token.
$oauth2 = chilkat::CkOAuth2->new();
$oauth2->put_AccessToken("OAUTH2_ACCESS_TOKEN");
$rest->SetAuthOAuth2($oauth2);

$success = $rest->Connect("www.googleapis.com",443,1,1);
if ($success != 1) {
    print $rest->lastErrorText() . "\r\n";
    exit;
}

$rest->AddPathParam("userId",'matt@chilkat.io');

$sbJson = chilkat::CkStringBuilder->new();
$success = $rest->FullRequestNoBodySb("GET","/gmail/v1/users/userId/profile",$sbJson);
if ($success != 1) {
    print $rest->lastErrorText() . "\r\n";
    exit;
}

if ($rest->get_ResponseStatusCode() != 200) {
    print "Received error response code: " . $rest->get_ResponseStatusCode() . "\r\n";
    print "Response body:" . "\r\n";
    print $sbJson->getAsString() . "\r\n";
    exit;
}

$json = chilkat::CkJsonObject->new();
$json->LoadSb($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 < $count_i) {
    $json->put_I($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;
}

print "Example Completed." . "\r\n";

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."
 }
}