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: traversal.rs
    path of file: ./repos/bnf/src/earley
    
    the code of the file until where you have to start completion: use super::{grammar::ProductionId, InputRange, Production};
use crate::{
    append_vec::{append_only_vec_id, AppendOnlyVec},
    tracing, Term,
};

append_only_
    
    fn match_term() {
        let grammar = "<start> ::= 'A'".parse().unwrap();
        let (grammar, input, mut tree) = traversal_test_setup(&grammar, "AAAA");
        let production = grammar.productions_iter().next().unwrap();
        let prediction = tree.predict(production, &input).id;
        let term_match = TermMatch::Terminal("A");

        let scanned = tree.match_term(prediction, term_match);

        assert_eq!(scanned.unmatched, production.rhs.terms.get(1..).unwrap());
    }