* fix MatchStage expr revision introduced bug

Author: Vincent Le Henaff

lib/Doctrine/ODM/MongoDB/Aggregation/Builder.php

@@ -194,8 +194,6 @@ public function execute(array $options = []): Iterator
     }
 
     /**
-     * @return Expr
-     *
      * @deprecated use createExpr instead
      */
     public function expr(): Expr

lib/Doctrine/ODM/MongoDB/Aggregation/Stage/MatchStage.php

@@ -113,21 +113,12 @@ public function all(array $values): self
     }
 
     /**
-     * Specify $expr criteria for the current field.
-     *
-     * You can create a new expression using the {@link Builder::matchExpr()}
-     * method.
-     *
-     * @see Expr::expr()
-     * @see https://docs.mongodb.com/manual/reference/operator/query/expr/
-     *
-     * @param array|Expr $expression
+     * Create a new Expr instance that can be used to build partial expressions
+     * for other operator methods.
      */
-    public function createExpr($expression): self
+    public function createExpr(): Expr
     {
-        $this->query->expr($expression);
-
-        return $this;
+        return $this->builder->matchExpr();
     }
 
     /**
@@ -182,21 +173,11 @@ public function exists(bool $bool): self
     }
 
     /**
-     * Specify $expr criteria for the current field.
-     *
-     * You can create a new expression using the {@link Builder::matchExpr()}
-     * method.
-     *
-     * @see Expr::expr()
-     * @see https://docs.mongodb.com/manual/reference/operator/query/expr/
-     *
-     * @param array|Expr $expression
-     *
      * @deprecated use createExpr instead
      */
-    public function expr($expression): self
+    public function expr(): Expr
     {
-        return $this->createExpr($expression);
+        return $this->createExpr();
     }
 
     /**