Allow code completion for CliMenuBuilder#end

Author: AydinHassan

src/Builder/CliMenuBuilder.php

@@ -22,6 +22,11 @@
 class CliMenuBuilder implements Builder
 {
     use BuilderUtils;
+
+    /**
+     * @var null|Builder
+     */
+    private $parent;
 
     /**
      * @var bool
@@ -464,4 +469,18 @@ public function build() : CliMenu
 
         return $menu;
     }
+
+    /**
+     * Return to parent builder
+     *
+     * @return CliMenuBuilder|SplitItemBuilder
+     */
+    public function end() : ?Builder
+    {
+        if (null === $this->parent) {
+            throw new RuntimeException('No parent builder to return to');
+        }
+
+        return $this->parent;
+    }
 }