@Nonnull
	public List<Problem> getProblemsByLevel(@Nonnull ProblemLevel level) {
		return getProblems(p -> p.level() == level);
	}
@param level
		Problem level to filter problems by.

@return List of problems matching the given level.
recaf-ui/src/main/java/software/coley/recaf/ui/control/richtext/problem/ProblemTracking.java