fn convert_skill_groups_from_database(
skill_groups: &[SkillGroup],
) -> (HashMap<SkillGroupKind, SkillGroup>, HashMap<SkillGroupKind, Result<Vec<Skill>, SkillsPersistenceError>>)
fn convert_skill_groups_from_database(
skill_groups: &[SkillGroup],
) -> (HashMap<SkillGroupKind, SkillGroup>, HashMap<SkillGroupKind, Result<Vec<Skill>, SkillsPersistenceError>>)