Editing: UPGRADE.md
Note about upgrading: Doctrine uses static and runtime mechanisms to raise awareness about deprecated code. - Use of `@deprecated` docblock that is detected by IDEs (like PHPStorm) or Static Analysis tools (like Psalm, phpstan) - Use of our low-overhead runtime deprecation API, details: https://github.com/doctrine/deprecations/ # Upgrade to 3.0.0 `Doctrine\Common\Lexer\Token` no longer implements `ArrayAccess`. Parameter type declarations have been added to `Doctrine\Common\Lexer\AbstractLexer` and `Doctrine\Common\Lexer\Token`. You should add both parameter type declarations and return type declarations to your lexers, based on the `@return` phpdoc. # Upgrade to 2.0.0 `AbstractLexer::glimpse()` and `AbstractLexer::peek()` now return instances of `Doctrine\Common\Lexer\Token`, which is an array-like class Using it as an array is deprecated in favor of using properties of that class. Using `count()` on it is deprecated with no replacement.
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