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: all_after.rs
    path of file: ./repos/intellij-rust/src/test/resources/org/rust/ide/formatter/fixtures/line_breaks
    
    the code of the file until where you have to start completion: use std::fmt; // Import the `fmt` module.


// Define a structure named `List` containing a `Vec`.
struct List(Vec<i32>);


/* h
    
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        let List(ref vec) = *self;


        try!(write!(f, "["));


        // Iterate over `vec` in `v` while enumerating the iteration
        // count in `count`.


        for (count, v) in vec.iter().enumerate() {
            if count != 0 { try!(write!(f, ", ")); } /* bar */


            /* foo */ try!(write!(f, "{}", v));
        }


        // Close the opened bracket and return a fmt::Result value
        /* foo */ write!(f, "]")
    }