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/uefi-rs/uefi/src/proto/debug
    
    the code of the file until where you have to start completion: //! Provides support for the UEFI debugging protocol.
//!
//! This protocol is designed to allow debuggers to query the state of the firmware,
//! as well as set up callbacks for vari
    
    pub fn get_maximum_processor_index(&mut self) -> usize {
        // initially set to a canary value for testing purposes
        let mut max_processor_index: usize = usize::MAX;

        // per the UEFI spec, this call should only return EFI_SUCCESS
        let _ = (self.get_maximum_processor_index)(self, &mut max_processor_index);

        max_processor_index
    }