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: context.rs
    path of file: ./repos/handlebars-rust/src
    
    the code of the file until where you have to start completion: use std::collections::{HashMap, VecDeque};

use serde::Serialize;
use serde_json::value::{to_value, Map, Value as Json};

use crate::block::{BlockContext, BlockParamHolder};
use crate::error::{RenderError, RenderErrorReason};
use crate::grammar::Rule;
use crate::json::path::*;
use crate::json::value::ScopedJson;
use crate::util::extend;

pub type Object = HashMap<String, Json>;

/// The context wrap data you render on your templates.
///
#[derive(Debug, Clone)]
pub struct Context {
    data: Json,
}

#[derive(Debug)]
enum ResolvedPath<'a> {
    // FIXME: change to borrowed when possible
    // full path
    AbsolutePath(Vec<String>),
    // relative path and path root
    
    
    fn test_navigation() {
        let addr = Address {
            city: "Beijing".to_string(),
            country: "China".to_string(),
        };

        let person = Person {
            name: "Ning Sun".to_string(),
            age: 27,
            addr,
            titles: vec!["programmer".to_string(), "cartographer".to_string()],
        };

        let ctx = Context::wraps(&person).unwrap();
        assert_eq!(
            navigate_from_root(&ctx, "./addr/country").unwrap().render(),
            "China".to_string()
        );
        assert_eq!(
            navigate_from_root(&ctx, "addr.[country]").unwrap().render(),
            "China".to_string()
        );

        let v = true;
        let ctx2 = Context::wraps(&v).unwrap();
        assert_eq!(
            navigate_from_root(&ctx2, "this").unwrap().render(),
            "true".to_string()
        );

        assert_eq!(
            navigate_from_root(&ctx, "titles.[0]").unwrap().render(),
            "programmer".to_string()
        );

        assert_eq!(
            navigate_from_root(&ctx, "age").unwrap().render(),
            "27".to_string()
        );
    }