deprecate STMT_KEY and use array keys instead

Author: TomasVotruba

phpstan.neon

@@ -379,6 +379,3 @@ parameters:
         -
             message: '#Property Rector\\PhpParser\\NodeTraverser\\AbstractImmutableNodeTraverser\:\:\$visitors \(list<PhpParser\\NodeVisitor>\) does not accept array<int\|string, PhpParser\\NodeVisitor>#'
             path: src/PhpParser/NodeTraverser/AbstractImmutableNodeTraverser.php
-
-        # handle next
-        - '#Fetching deprecated class constant STMT_KEY of class Rector\\NodeTypeResolver\\Node\\AttributeKey#'

src/NodeTypeResolver/Node/AttributeKey.php

@@ -162,6 +162,7 @@ final class AttributeKey
     public const IS_BYREF_RETURN = 'is_byref_return';
 
     /**
+     * @deprecated This value can change, as based on default input keys. Use existing array keys instead.
      * @var string
      */
     public const STMT_KEY = 'stmt_key';