How to implement optional function parameters in Go? Analog of overloading from other languages

Hello colleagues! I'm switching to Go from Python and Java, and I've encountered a problem. In those languages, I'm used to function overloading and optional arguments where you can set default values. For example, in Python I would write: ```python def create_user(name, age=None, city="Moscow"): ... ``` But in Go, I can't simply omit a parameter or write two functions with the same name. I need to create a function for user registration where only `name` is required, and `age` and `city` are optional. I tried this code, but the compiler complains: ```go func CreateUser(name string, age int, city string) { // if age is not passed, I want it to be 0 // if city is not passed, I want "Moscow" } func CreateUser(name string) { // error: CreateUser redeclared CreateUser(na