ref: be5690bf05707107bc6f02005af82399b0c1c655
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; }