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: transform.rs
    path of file: ./repos/CYFS/src/component/cyfs-stack/src/crypto
    
    the code of the file until where you have to start completion: use super::processor::*;
use cyfs_base::*;
use cyfs_lib::*;

use std::sync::Arc;

// 实现从input到output的转换
pub(crate) struct CryptoInputTransformer {
    processor: CryptoOutputProcessorRef,
}

impl CryptoInputT
    
    fn convert_common(common: CryptoInputRequestCommon) -> CryptoOutputRequestCommon {
        CryptoOutputRequestCommon {
            // 请求路径，可为空
            req_path: common.req_path,

            // 来源DEC
            dec_id: common.source.get_opt_dec().cloned(),

            // 用以处理默认行为
            target: common.target,

            flags: common.flags,
        }
    }