ref: 087b13c8e3f5315c778e53cf441efdc386f7a2b7
dir: /Modules/persons.b/
implement Persons; include "persons.m"; population: int; init() { population = 0; } getpop(): int { return population; } mkperson(): ref Person { population++; return ref Person; } Person.stringify(p: self ref Person): string { return p.name; }