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: less-rs.rs
    path of file: ./repos/minus/examples
    
    the code of the file until where you have to start completion: // This is an example of a pager that uses minus and reads data from a file and pages
// it. It is similar to less, but in Rust. Hence the name `less-rs`
// This example uses OS threads,

// This example uses a lot of `.expect()` and does not properly handle them. If
// someone is interested to add proper error handling, you are free to file pull
//requests. Libraries like anyhow 
    
fn main() -> Result<(), Box<dyn std::error::Error>> {
    // Get the file name from the command line
    // Typically, you want to use something like clap here, but we are not doing it
    // here to make the example simple
    let arguments: Vec<String> = args().collect();
    // Check if there are is at least two arguments including the program name
    if arguments.len() < 2 {
        // You probably want to do a graceful exit, but we are panicking here to make
        // example short
        panic!("Not enough arguments");
    }
    // Get the filename
    let filename = arguments[1].clone();
    // Initialize the configuration
    let output = minus::Pager::new();
    output.set_prompt(&filename)?;
    read_file(filename, output)
}