Create Space with Blueprint via Plugin

[Jonathan Smith]

Hello all. I need to create Confluence spaces via REST API calls, but found the official Atlassian APIs to be lacking, as I was unable to make a space with a blueprint or assign it permissions. So I decided to make a plugin with a REST module to add the functionality I want. With it, I can now assign permissions like I wanted but I still don't see a way to assign blueprints. Does the means to do so exist in the Java APIs so I can add it to my plugin?

[Thomas Van de Pol]

I have the same question from my side, but for Confluence Cloud