Add option: Representing dependencies of structures within the same package in a UML class diagram

[GenkiHirano]

I want to express the dependencies of structures within the same package in a URL diagram. I would be happy if you implement it.

package model

type Address struct {
    postalCode      postalCode
    prefecture      string    
    city            string   
    streetAndNumber string
    buildingAndRoom string
}

type postalCode struct {
    string
}