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: dependency.rs
    path of file: ./repos/cargo/src/cargo/core
    
    the code of the file until where you have to start completion: use cargo_platform::Platform;
use semver::VersionReq;
use serde::ser;
use serde::Serialize;
use std::borrow::Cow;
use std::fmt;
use std::path::PathBuf;
use std::rc::Rc;
use tracing::trace;

use crate::core::compiler::
    
    pub fn set_kind(&mut self, kind: DepKind) -> &mut Dependency {
        if self.is_public() {
            // Setting 'public' only makes sense for normal dependencies
            assert_eq!(kind, DepKind::Normal);
        }
        Rc::make_mut(&mut self.inner).kind = kind;
        self
    }