title: What is difference between contains with includes method in immutable js
body: <p>What is difference between <em>contains</em> and <em>includes</em> methods in immutable js?</p>
  
  <p>The <a href="http://facebook.github.io/immutable-js/docs/#/Collection/includes" rel="nofollow noreferrer">documentation</a> just says </p>
  
  <blockquote>
    <p>ALIAS
    contains()</p>
  </blockquote>