public enum SexType implements ProtoEnum {
    MALE(1),

    FEMALE(2),

    UNKNOWN(3),

    /**
     * <a href='https://jira.badoojira.com/browse/MAPI-2164'>MAPI-2164</a> Treated exactly like :prt:`MALE` but displayed differently
     */
    SEX_TYPE_OTHER(4);

    final int number;

    private SexType(int number) {
        this.number = number;
    }

    public int getNumber() {
        return number;
    }

    public static SexType valueOf(int number) {
        switch(number) {
            case 1: return MALE;
            case 2: return FEMALE;
            case 3: return UNKNOWN;
            case 4: return SEX_TYPE_OTHER;
            default: return null;
        }
    }
}