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: util.rs
    path of file: ./repos/rusty-gql/cli/src/code_generate
    
    the code of the file until where you have to start completion: use std::collections::HashMap;

use rusty_gql::{GqlValueType, TypeDefinition};
use syn::{ext::IdentExt, ItemUse};

pub fn get_interface_impl_object_map(
    type_definitions: &HashMap<String, TypeDefinition>,
) -> HashMap<String, Vec<String>> 
    
pub fn is_default_item_use(item_use: &ItemUse) -> bool {
    if let syn::UseTree::Path(use_path) = &item_use.tree {
        let ident = use_path.ident.unraw().to_string();
        if ident.eq("rusty_gql") {
            return true;
        }

        if ident.eq("crate") {
            if let syn::UseTree::Path(child_path) = &*use_path.tree {
                let ident = child_path.ident.unraw().to_string();
                if ident.eq("graphql") {
                    return true;
                }
            }
        }
    }
    false
}