def METHOD_NAME(theme: str) -> str | None:
    if theme == "mobilite":
        return "23"
    if theme == "contraintes_familiales":
        return "24"
    if theme == "sante":
        return "25"
    if theme == "maitrise_langue":
        return "26"
    if theme == "logement":
        return "27"
    if theme == "difficulte_financiere":
        return "28"
    if theme == "difficulte_administrative":
        return "29"