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/faucon/faucon-emu/src/dma
    
    the code of the file until where you have to start completion: //! Implementation of the Falcon DMA engine.

use std::convert::TryInto;
use std::ptr;

use crate::cpu::Cpu;

/// Supported request modes that the DMA engine can process.
#[derive(Debug, Partial
    
    pub fn secret(&self) -> bool {
        if self.mode == RequestMode::CodeLoad {
            // In case of a code load, the secret flag may or may not be set.
            self.secret.unwrap()
        } else {
            // For data transfers, secret xfers are irrelevant, thus always
            // being set to `false`.
            false
        }
    }