facts property
Facts is how many assertions this source filed; Won is how many judged events it was the assertion in force for. A source with many facts and few wins is one that is being outranked, which is worth knowing before concluding it is wired correctly.
Please note: This property should have been non-nullable! Since the specification file does not include a default value (using the "default:" property), however, the generated source code must fall back to having a nullable type. Consider adding a "default:" property in the specification file to hide this note.
Implementation
int? facts;