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: append_path.rs
    path of file: ./repos/irisia-gui/irisia-macros/src/derive_style/codegen_utils
    
    the code of the file until where you have to start completion: use proc_macro2::TokenStream;
use quote::{quote, ToTokens};
use syn::{punctuated::Punctuated, Index, Member, Token, Type, TypeTuple};

use crate::derive_style::variant_analyzer::{
    full_quality_paths::FullQualitySegment, VariantAnalysis,
};

use super::CodeGenerator;

impl CodeGenerator {
    pub fn append_path(&mut self, va: &VariantAnalysis) {
        let variant = self.variant.clone();

        for path in va.paths.iter() {
            let (ty, body) = impl_one
    
    pub fn append_path(&mut self, va: &VariantAnalysis) {
        let variant = self.variant.clone();

        for path in va.paths.iter() {
            let (ty, body) = impl_one_path(path);
            let body = va.field_type.surround(body.into_iter());

            self.impl_trait(
                quote!(std::convert::From<#ty>),
                quote! {
                    fn from(value: #ty) -> Self {
                        #variant #body
                    }
                },
            )
        }
    }