I have custom module. I want add file my.js in folder app\code\Xanka\Slider\view\frontend\web\js\slider\my.js. I used code in app\code\Xanka\Slider\view\frontend\layout\default.xml
<head>
<title>My Slideshow</title>
<script src="Xanka_Slider::js/slider/jquery.themepunch.plugins.min.js"/>
</head>
is not true.