Find Documentation of Rust Prelude type

Question

I am using the below code to open a file reference as per Tutorial

File::with_name(&format!("config/{}", env)

Where will I find the documentation of this with_name function of the file. Despite googling I couldn't find it

Answer 1

At the top of the file you linked you can see that File is not std::fs::File , but imported from the config crate. Here is its documentation: https://docs.rs/config/0.10.1/config/struct.File.html