Fix printing of embedded fields

[owen-mc]

A struct type like this

struct {
   A
}

was getting printed by depstubber as

struct {
  A A
}

This fixes that.

It was hard to test it locally because model/model.go is accessed from the github repo. I had to add some code after copying the go.mod file to add a redirection to it so that it uses the local copy. I have left this in, commented out, to make it easier to test this kind of changing in future.

Unfortunately I was not able to find any way to avoid printing promoted methods as if they were methods on the type itself. It seems this is deliberately not exposed in the reflect package.

[Copilot]

Pull Request Overview

This pull request fixes the printing of embedded fields when using depstubber by preventing redundant field names in the output.

• In reflect.go, a commented code block has been added to aid local testing by appending a replace directive to go.mod.
• In model/model.go, an Anonymous field flag has been introduced in the Field struct and the Field.String() method has been updated to avoid printing the type name twice for embedded fields.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
reflect.go	Added a commented section for local development testing that appends a replace directive to go.mod.
model/model.go	Introduced an Anonymous field and updated Field.String() to correctly print embedded fields without repetition.

Comments suppressed due to low confidence (2)

reflect.go:120

• [nitpick] Consider adding a note or using build tags so that the commented testing code is clearly marked for removal or activation only in development environments.

// To enable local development of model/model.go, uncomment the following lines

model/model.go:607

• Ensure that there is adequate test coverage verifying that anonymous fields are printed correctly without duplicating field names.

if f.Anonymous {

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