yiisoft/yii2 — pull request #836 by cebe (2013-08-31 16:55:56+00:00)
Title: Added hasMethod() to Component and Object class

this allows implementing __call() in behaviors

See this forum topic for details:
http://www.yiiframework.com/forum/index.php/topic/46629-invoke-behavior-method-through-php-magic-method-call-dosent-work/