WIP: Experiements for ee-specific-line-check

What does this MR do?

Are there points in the code the reviewer needs to double check?

Why was this MR needed?

Does this MR meet the acceptance criteria?

• Tests added for this feature/bug
• Conform to the code review guidelines
  • Has been reviewed by a Backend maintainer

What are the relevant issue numbers?

Closes #6038 (closed)