How to call a layout in Controller in Zendframework2

Zend Framework 2

-:: Step 1 ::-
Create layout file
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First Create a directory in your module,
Suppose we have User module, and I would like to add login page layout
then, create module/User/view/layout/login.phtml file into this directory
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-:: Step 2 ::-
Call layout into your Controller Action
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Simply Call the layout this way into 
your controller

$this->layout('layout/login');

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