BCTokens: change property visibility

⚠️ Breaking Change ⚠️

The `$phpcsCommentTokensTypes`, `$ooScopeTokens`, `$textStringTokens` properties all had `protected` visibility.

These properties are not intended to be used directly by implementing standards and with them being `protected`, they would only be accessible if the implementing standard would extend the `BCTokens` class, which doesn't really make sense as it only contains static method anyhow.

So to make the intention clearer, these have now all be reclassified as `private` properties.

Author: jrfnl

PHPCSUtils/BackCompat/BCTokens.php

@@ -51,7 +51,7 @@ class BCTokens
      *
      * @var string[]
      */
-    protected static $phpcsCommentTokensTypes = [
+    private static $phpcsCommentTokensTypes = [
         'T_PHPCS_ENABLE',
         'T_PHPCS_DISABLE',
         'T_PHPCS_SET',
@@ -66,7 +66,7 @@ class BCTokens
      *
      * @var array <int|string> => <int|string>
      */
-    protected static $ooScopeTokens = [
+    private static $ooScopeTokens = [
         \T_CLASS      => \T_CLASS,
         \T_ANON_CLASS => \T_ANON_CLASS,
         \T_INTERFACE  => \T_INTERFACE,
@@ -80,7 +80,7 @@ class BCTokens
      *
      * @var array <int|string> => <int|string>
      */
-    protected static $textStringTokens = [
+    private static $textStringTokens = [
         \T_CONSTANT_ENCAPSED_STRING => \T_CONSTANT_ENCAPSED_STRING,
         \T_DOUBLE_QUOTED_STRING     => \T_DOUBLE_QUOTED_STRING,
         \T_INLINE_HTML              => \T_INLINE_HTML,