[Vobject] How do you add multiple "type_param"

[Tames McTigue]

Hello,

I'm trying to create a card where the email address has this type of format:

EMAIL;type=INTERNET;type=WORK;type=pref:johnDoe at example.org

I see how to add a type from the example, such as "INTERNET", but not
how to add three types. I tried using a list but that doesn't work, it
just puts a comma between each value.

Thank you,

- Tames