Few month ago I developed  a simple module called Commerce Order2pdf and then I also added custom tokens as you can read from this post Custom token creation for Drupal 7 and now I reviewed this module a bit and planned to add views field handler (This means I can create custom view with download links). 

So how did I implemented this?

First step was to edit commerce_order2pdf.module file and add hook_views_api. So I could start working with views.

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