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: ast.rs
    path of file: ./repos/biome/xtask/codegen/src
    
    the code of the file until where you have to start completion: //! Generate SyntaxKind definitions as well as typed AST definitions for nodes and tokens.
//! This is derived from 
    
fn clean_token_name(grammar: &Grammar, token: &Token) -> String {
    let mut name = grammar[*token].name.clone();

    // These tokens, when parsed to proc_macro2::TokenStream, generates a stream of bytes
    // that can't be recognized by [quote].
    // Hence, they need to be decorated with single quotes.
    if "[]{}()`".contains(&name) {
        name = format!("'{}'", name);
    }
    name
}