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: mod.rs
    path of file: ./repos/citybound/cb_util/src/config_manager
    
    the code of the file until where you have to start completion: use kay::{World, Actor, TypedID};
use compact::{CHashMap, COption, CString, Compact};
use arrayvec::ArrayString;
use serde::de::DeserializeOwned;

pub type Name = ArrayString<[u8; 16]>;
pub trait Config: Compac
    
    fn apply_config_change(&mut self, name: Name, maybe_value: &COption<C>, _: &mut World) {
        if let COption(Some(ref value)) = *maybe_value {
            self.local_cache().insert(name, value.clone());
        } else {
            self.local_cache().remove(name);
        }
    }