How does Go implement interfaces differently from Java or C#?

Suppose you need to write a function that accepts any type that can be printed. How would you define the parameter using Go interfaces, and how does that differ from how you'd do it in Java?

If you have a struct that implements a method with a pointer receiver, can a value of that struct be assigned to a variable of an interface type? Explain what happens and why it's different from C#.

You added a new method to an existing interface in a Go codebase, and a type that previously satisfied the interface now fails to compile. Why did this happen, and how would you debug it compared to a similar change in Java?

During a refactor, you notice that a function returning an interface value sometimes holds a nil underlying concrete value, causing a panic when you call a method. Explain why this occurs in Go and how it differs from null handling in Java/C#.

Design a plugin architecture where plugins are loaded at runtime. Would you choose Go interfaces or Java's reflection‑based interfaces, and what are the trade‑offs in terms of type safety, performance, and binary size?

Your microservice written in Go needs to expose a gRPC API that mirrors an existing Java service using interface definitions. How would you map Go's implicit interface implementation to the explicit contracts in Java, and what pitfalls should you watch for?

Your organization is migrating a large codebase from Java to Go. One concern is how interface contracts are enforced. How would you set up a migration strategy that ensures behavioral compatibility given Go's structural typing versus Java's nominal typing?

Across multiple teams, you need to standardize how errors are propagated through interface methods. Discuss how Go's interface implementation model influences error handling design compared to Java/C#, and propose guidelines to avoid subtle bugs at scale.