You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: lex.go
    path of file: ./repos/gotosocial/vendor/github.com/tdewolff/parse/v2/html
    
    the code of the file until where you have to start completion: // Package html is an HTML5 lexer following the specifications at http://www.w3.org/TR/html5/syntax.html.
package html

import (
	"strconv"

	"github.com/tdewolff/parse/v2"
)

// TokenType determines the type of token, eg. a number
    
func (tt TokenType) String() string {
	switch tt {
	case ErrorToken:
		return "Error"
	case CommentToken:
		return "Comment"
	case DoctypeToken:
		return "Doctype"
	case StartTagToken:
		return "StartTag"
	case StartTagCloseToken:
		return "StartTagClose"
	case StartTagVoidToken:
		return "StartTagVoid"
	case EndTagToken:
		return "EndTag"
	case AttributeToken:
		return "Attribute"
	case TextToken:
		return "Text"
	case SvgToken:
		return "Svg"
	case MathToken:
		return "Math"
	}
	return "Invalid(" + strconv.Itoa(int(tt)) + ")"
}