type hint like "String?" ...

[charlesw1234]

there is: var json_body = JSON.parse_string(...)，but a field , such as "avatar", is json null, so:
var avatar: String = json_body.get("avatar", "") will be failed.
add: var avatar: String? = json_body.get("avatar", "") is refused by studio.

I have noticed that: var Node = null is work, but why var avatar: String = null do not work?

[arkology]

See #162

[Calinou]

Thanks for the proposal! Consolidating in #162.