More for #1801

.php_cs

@@ -23,7 +23,9 @@ return PhpCsFixer\Config::create()
         'semicolon_after_instruction' => true,
         'simplified_null_return' => true,
         'native_function_invocation' => false,
-        'yoda_style' => false
+        'yoda_style' => false,
+        'no_break_comment' => false,
+        'native_constant_invocation' => false,
     ])
     ->setFinder(
         PhpCsFixer\Finder::create()

src/SMTP.php

@@ -1310,7 +1310,7 @@ class SMTP
      * If no reply has been received yet, it will return null.
      * If no pattern was matched, it will return false.
      *
-     * @return bool|null|string
+     * @return bool|string|null
      */
     protected function recordLastTransactionID()
     {
@@ -1336,7 +1336,7 @@ class SMTP
      * If no reply has been received yet, it will return null.
      * If no pattern was matched, it will return false.
      *
-     * @return bool|null|string
+     * @return bool|string|null
      *
      * @see recordLastTransactionID()
      */