What abstraction mechanism in Go language is intended for representing characters or tokens?

In the Go language, the rune type is used to represent characters or tokens. It is an alias for the int32 type, designed to store Unicode code points. Thus, rune allows working with Unicode characters, not just bytes.

Example of usage:

var ch rune = '世' // Unicode character
fmt.Printf("%c %U\n", ch, ch) // output: 世 U+4E16

This makes it convenient to process text in different languages, taking into account multilingual characters.