ContactExtensionNLLegalForm:
    | "legal_form_unknown"
    | "other"
    | "non_dutch_eu_company"
    | "non_dutch_legal_form_enterprise_subsidiary"
    | "limited_company"
    | "limited_company_in_formation"
    | "cooperative"
    | "limited_partnership"
    | "sole_company"
    | "european_economic_interest_group"
    | "religious_entity"
    | "partnership"
    | "public_company"
    | "mutual_benefit_company"
    | "residential"
    | "shipping_company"
    | "foundation"
    | "association"
    | "trading_partnership"
    | "natural_person"