- A lot of fixes done on this for a test project.

src/Lean.php

@@ -28,7 +28,7 @@ class Lean
             throw new \Exception("You must provide at least one application to autoload within your config file ( 'lean' => 'autoload' => [] )");
         }
 
-        foreach($list as $application) {
+        foreach(array_filter($list) as $application) {
             if ( $this->container->has($application) ) {
                 $this->applications[] = ( new Application() )->fromArray($this->container->get($application));
             }
@@ -49,6 +49,19 @@ class Lean
         return static::DEFAULT_PICEA_CONTEXT;
     }
 
+    public function getPiceaExtensions() : array
+    {
+        $list = [];
+
+        foreach(array_reverse($this->applications) as $apps) {
+            if ( $apps->piceaExtensions ?? null ) {
+                $list = array_merge($list, $apps->piceaExtensions);
+            }
+        }
+
+        return $list;
+    }
+
     public function getRoutable() : array
     {
         return array_merge(...array_map(fn($app) => $app->routes ?? [], $this->applications));