@return self

src/Executor/ExecutionResult.php

@@ -78,7 +78,7 @@ class ExecutionResult implements \JsonSerializable
      * );
      *
      * @api
-     * @return $this
+     * @return self
      */
     public function setErrorFormatter(callable $errorFormatter)
     {
@@ -98,7 +98,7 @@ class ExecutionResult implements \JsonSerializable
      * }
      *
      * @api
-     * @return $this
+     * @return self
      */
     public function setErrorsHandler(callable $handler)
     {

src/Language/AST/Node.php

@@ -48,7 +48,7 @@ abstract class Node
     }
 
     /**
-     * @return $this
+     * @return self
      */
     public function cloneDeep()
     {

src/Language/Lexer.php

@@ -690,7 +690,7 @@ class Lexer
      *
      * @param $positionOffset
      * @param $byteStreamOffset
-     * @return $this
+     * @return self
      */
     private function moveStringCursor($positionOffset, $byteStreamOffset)
     {