Why Shopify entity ids increase by 4 every time when I create new entity? by Ferid Mövsümov

When I create pages with Shopify Api I noticed that id values increase by 4 every time I create new page.

For Example:

13911113, 13911117, 13911121...

I can't understand why you increase id values by four? is there a good reason for doing that?

I have also asked this question on stackoverflow