diff --git a/doc/component/AST_builders.markdown b/doc/component/AST_builders.markdown
index 5597e2a..1176a3e 100644
--- a/doc/component/AST_builders.markdown
+++ b/doc/component/AST_builders.markdown
@@ -37,7 +37,7 @@ $node = $factory->namespace('Name\Space')
         ->addStmt($factory->method('someMethod')
             ->makePublic()
             ->makeAbstract() // ->makeFinal()
-            ->setReturnType('bool')
+            ->setReturnType('bool') // ->makeReturnByRef()
             ->addParam($factory->param('someParam')->setTypeHint('SomeClass'))
             ->setDocComment('/**
                               * This method does something.
@@ -114,4 +114,4 @@ nodes. The following methods are currently available:
  * `concat(...$exprs)`: Create a tree of `BinaryOp\Concat` nodes for the given expressions.
 
 These methods may be expanded on an as-needed basis. Please open an issue or PR if a common
-operation is missing.
\ No newline at end of file
+operation is missing.