policy_reports lists only Assets with the ArfReport
comply_with lists only Assets that comply with given policy

In other words, Assets whose last arf_report complied.
Important typo fix in programming documentation.
incomply_with lists only those Assets that do not comply

with given policy
Use named argument to increase readability.
Refactor: Extract scope: last_arf
Refactor: Extract scope: breakdown
inconclusive_with lists Assets reporting inconclusive resuls
policy_reports_missing lists Assets without reports for given policy