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: loader.rs
    path of file: ./repos/jvm-old/jvm/src/linker
    
    the code of the file until where you have to start completion: use byteorder::{BigEndian, ReadBytesExt};
use std::collections::{HashMap, HashSet};
use std::io::Cursor;
use std::iter::FromIterator;
use std::io;
use std::mem::size_of;
use std::sync::Arc;
use crate::class::{Class, FieldDescriptor, Method, ConstantPool, ObjectField, FieldInfo, JavaType, AccessFlags};
use cra
    
    pub fn recurse_is_superclass(&self, subclass: Arc<Class>, superclass: Arc<Class>) -> bool {
        if subclass == superclass {
            true
        } else if superclass.this_class == "java/lang/Object" {
            true
        } else if subclass.this_class == "java/lang/Object" {
            false
        } else {
            let superclass_of_subclass = self.get_class(subclass.super_class.as_deref().unwrap()).unwrap();
            self.recurse_is_superclass(superclass_of_subclass, superclass)
        }
    }