title: How to disable Gutenberg / block editor for certain post types?
body: <p>WordPress added <strong>Gutenberg / block editor</strong> in its 5th version and it's enabled by default for Post and Page post types.</p>
  
  <p>It might be enabled by default for all custom post types in close future so as a WordPress developer I want to know how to disable this editor for my own custom post types? I want to keep classic editor for the post types that I registered from my plugins or themes.</p>