Rust libp2p库报错：无法找到development_transport函数求助

我的Rust代码一直报错：cannot find function development_transport in crate 'libp2p'。但在编辑器中点击导入语句查看libp2p的lib.rs文件时，明明能看到该函数。使用的libp2p版本为0.49.0，相关代码及Cargo.toml配置如下：

use libp2p::futures::StreamExt;
use libp2p::swarm::dummy::Behaviour;
use libp2p::swarm::{Swarm, SwarmEvent};
use libp2p::{identity, PeerId};
use std::error::Error;

#[tokio::main]
async fn main() -> Result<(), Box<dyn Error>> {
    let local_key = identity::Keypair::generate_ed25519();

    let local_peer_id = PeerId::from(local_key.public());

    println!("Local peer id is: {}", local_peer_id);

    let behaviour = Behaviour;

    let transport = libp2p::development_transport(local_key)?;

    let mut swarm = Swarm::new(transport, behaviour, local_peer_id);

    swarm.listen_on("/ip4/0.0.0.0/tcp/0".parse()?)?;

    loop {
        match swarm.select_next_some().await {
            SwarmEvent::NewListenAddr { address, .. } => {
                println!("Listening on local address {:?}", address)
            }
            _ => {}
        }
    }
}

Cargo.toml内容：

[dependencies]
libp2p = "0.49.0"
tokio = { version = "1.21.2", features = ["full"] }

• development_transport 函数属于libp2p的development可选特性，默认未启用，必须显式开启才能调用。
• 修改Cargo.toml中的libp2p依赖配置，添加development特性：

[dependencies]
libp2p = { version = "0.49.0", features = ["development"] }
tokio = { version = "1.21.2", features = ["full"] }

• 核心原因：libp2p将调试、开发类的便捷工具函数放在可选特性中，默认不编译这类代码以优化编译体积和最终二进制大小，因此使用这类函数前需要手动开启对应特性。

内容的提问来源于stack exchange，提问作者Tjardo