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: header_gen.rs
    path of file: ./repos/gdext/godot-bindings/src
    
    the code of the file until where you have to start completion: /*
 * Copyright (c) godot-rust; Bromeon and contributors.
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/.
 */

use std::env;
use std::path::Path;

pub(crate) fn generate_rust_binding(in_h_path: &Path, out_rs_path: &Path) {
    let c_header_path = in_h_path
    
fn configure_platform_specific(builder: bindgen::Builder) -> bindgen::Builder {
    let target_vendor = env::var("CARGO_CFG_TARGET_VENDOR").unwrap();
    if target_vendor == "apple" {
        eprintln!("Build selected for macOS.");
        let path = env::var("LLVM_PATH").expect("env var 'LLVM_PATH' not set");

        builder
            .clang_arg("-I")
            // .clang_arg(format!("{path}/include"))
            .clang_arg(apple_include_path().expect("apple include path"))
            .clang_arg("-L")
            .clang_arg(format!("{path}/lib"))
    } else {
        eprintln!("Build selected for Linux/Windows.");
        builder
    }
}