weaponProficiencies: {
    firearm: "PF1.Proficiency.Weapon.firearm";
    heavy: "PF1.Proficiency.Weapon.heavy";
    martial: "PF1.Proficiency.Weapon.martial";
    siege: "PF1.Proficiency.Weapon.siege";
    simple: "PF1.Proficiency.Weapon.simple";
} = ...

The set of broad Weapon Proficiencies a character may have