Module Dependencies and impacts on module's ClassLoader?

Module Development
1

This is a broad question, but I'm chasing some bugs and feel like I'm missing some key background info.

Q: How does adding a Module Dependency (<depends>ID</depends>) impact a module's ClassLoader? Any 8.1/8.3 differences?

2

The modules you depend on become parent ClassLoaders. I think this is the same in 8.1 and 8.3.