Capture Context fails if masking enabled

[omerida]

\CyberSource\Api\KeyGenerationApi::generatePublicKey() will fail if masking is enabled.

The code fails in cybersource/rest-client-php/lib/Api/KeyGenerationApi.php, line 172 because $httpBody is an array and \CyberSource\Utilities\Helpers\DataMasker::maskData expects to be passed a JSON string.

[omerida]

This happens if you follow cybersource-flex-samples-php generatekey.php/[php-microform] example.

The correct way to do this is not pass in a bare array but instead call it like this:

	$keyRequest = new GeneratePublicKeyRequest([
		"encryptionType" => "RsaOaep256",
		"targetOrigin" => $targetOrigin,
	]);
	// Generating Flex .11 capture context 
       $keyResponse = $api_instance->generatePublicKey($format = 'JWT', $keyRequest);