default services conflit ?

old.vendor/doctrine/common/lib/Doctrine/Common/Lexer.php

@@ -0,0 +1,25 @@
+<?php
+namespace Doctrine\Common;
+
+use Doctrine\Common\Lexer\AbstractLexer;
+use function trigger_error;
+use const E_USER_DEPRECATED;
+
+@trigger_error(Lexer::class . ' is deprecated.', E_USER_DEPRECATED);
+
+/**
+ * Base class for writing simple lexers, i.e. for creating small DSLs.
+ *
+ * Lexer moved into its own Component Doctrine\Common\Lexer. This class
+ * only stays for being BC.
+ *
+ * @since  2.0
+ * @author Guilherme Blanco <guilhermeblanco@hotmail.com>
+ * @author Jonathan Wage <jonwage@gmail.com>
+ * @author Roman Borschel <roman@code-factory.org>
+ *
+ * @deprecated Use Doctrine\Common\Lexer\AbstractLexer from doctrine/lexer package instead.
+ */
+abstract class Lexer extends AbstractLexer
+{
+}