Add phan checks at max level

src/AWS/AWS.php

@@ -321,7 +321,7 @@ class AWS
 
 	/**
 	 * @param float $amount
-	 * @param string $creation_id
+	 * @param string|null $creation_id
 	 * @return string
 	 */
 	public function getGiftCardPayload(float $amount, ?string $creation_id = null): string

src/AmazonIncentives.php

@@ -54,7 +54,7 @@ final class AmazonIncentives
 
 	/**
 	 * @param float $value
-	 * @param string $creation_request_id AWS creationRequestId
+	 * @param string|null $creation_request_id AWS creationRequestId
 	 * @return                            Response\CreateResponse
 	 *
 	 * @throws AmazonErrors

src/Client/Client.php

@@ -55,7 +55,7 @@ class Client implements ClientInterface
 				$error_status = 'RESEND';
 				$error_code = 'T001';
 				$error_type = 'RateExceeded';
-				$message = $result_ar['message'];
+				$message = $result_ar['message'] ?? 'Rate exceeded';
 			} else {
 				// for all other error messages
 				$error_status = $result_ar['agcodResponse']['status'] ?? 'FAILURE';

src/Debug/AmazonDebug.php

@@ -16,7 +16,7 @@ class AmazonDebug
 	 */
 	private static $debug = false;
 	/**
-	 * @var string|null;
+	 * @var string|null
 	 */
 	private static $id = null;
 
@@ -91,7 +91,7 @@ class AmazonDebug
 		if (self::$debug === false) {
 			return;
 		}
-		self::$log[self::getId()][] = $data;
+		self::$log[self::getId() ?? ''][] = $data;
 	}
 
 	/**