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: unnecessary_list_comprehension_set.rs
    path of file: ./repos/ruff/crates/ruff_linter/src/rules/flake8_comprehensions/rules
    
    the code of the file until where you have to start completion: use ruff_diagnostics::{AlwaysFixableViolation, Diagnostic, Edit, Fix};
use ruff_macros::{derive_message_formats, violation};
use ruff_python_ast as ast;
use ruff_text_size::{Ranged, TextSize};

use crate::checkers::ast::Checker;
use crate::rules::flake8_comprehensions::fixes::{pad_end, pad_start};

use super::helpers;

/// ## What it does
/// Checks for unnecessary list compre
    
pub(crate) fn unnecessary_list_comprehension_set(checker: &mut Checker, call: &ast::ExprCall) {
    let Some(argument) = helpers::exactly_one_argument_with_matching_function(
        "set",
        &call.func,
        &call.arguments.args,
        &call.arguments.keywords,
    ) else {
        return;
    };
    if !checker.semantic().is_builtin("set") {
        return;
    }
    if argument.is_list_comp_expr() {
        let mut diagnostic = Diagnostic::new(UnnecessaryListComprehensionSet, call.range());
        diagnostic.set_fix({
            // Replace `set(` with `{`.
            let call_start = Edit::replacement(
                pad_start("{", call.range(), checker.locator(), checker.semantic()),
                call.start(),
                call.arguments.start() + TextSize::from(1),
            );

            // Replace `)` with `}`.
            let call_end = Edit::replacement(
                pad_end("}", call.range(), checker.locator(), checker.semantic()),
                call.arguments.end() - TextSize::from(1),
                call.end(),
            );

            // Delete the open bracket (`[`).
            let argument_start =
                Edit::deletion(argument.start(), argument.start() + TextSize::from(1));

            // Delete the close bracket (`]`).
            let argument_end = Edit::deletion(argument.end() - TextSize::from(1), argument.end());

            Fix::unsafe_edits(call_start, [argument_start, argument_end, call_end])
        });
        checker.diagnostics.push(diagnostic);
    }
}