Can I parse JSON with empty fields with Iron's bodyparser?

Question

I'm writing a simple REST API using Iron. There is an endpoint that parses incoming JSON into a structure. Not all fields of the structure are mandatory, some can be omitted. I'm trying to parse JSON with the bodyparser crate like this

let body = r.get::<bodyparser::Struct<MyFancyDataRequest>>();

The structure looks like this:

#[derive(Serialize, Deserialize, Clone)]
struct MyFancyDataRequest {
    name: String,
    address: String
}

The incoming JSON contains only "name"

{"name":"John Doe"}

I'm getting the following error:

Can't parse body to the struct (missing field `address`)

Is it possible to make the parser ignore the missing fields? For instance, in Go I could mark optional struct fields with the omitempty tag.