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/rust-gpu/crates/rustc_codegen_spirv/src/builder
    
    the code of the file until where you have to start completion: mod builder_methods;
mod byte_addressable_buffer;
mod ext_inst;
mod intrinsics;
pub mod libm_intrinsics;
mod 
    
    pub fn zombie(&self, word: Word, reason: &str) {
        if let Some(current_span) = self.current_span {
            self.zombie_with_span(word, current_span, reason);
        } else {
            self.zombie_no_span(word, reason);
        }
    }