Add implementation only if set

activecollab · Nov 20, 2015 · 084d4b4 · 084d4b4
1 parent 77242cc
commit 084d4b4
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/Type.php b/src/Type.php
@@ -505,7 +505,9 @@ public function &addTrait($interface = null, $implementation = null) {
                     $this->traits[$interface] = [];
                 }
 
-                $this->traits[$interface][] = $implementation;
+                if ($implementation) {
+                    $this->traits[$interface][] = $implementation;
+                }
             } else {
                 throw new InvalidArgumentException('Interface or implementation are required');
             }