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: suspicious_to_owned.rs
    path of file: ./repos/rust-clippy/clippy_lints/src/methods
    
    the code of the file until where you have to start completion: use clippy_utils::diagnostics::span_lint_and_then;
use clippy_utils::is_diag_trait_item;
use clippy_utils::source::snippet_with_context;
use rustc_errors::Applicability;
use rustc_hir as hir;
use rustc_lint::LateContext;
use rustc_middle::ty::print::with_forced_trimmed_paths;
use rustc_middle::ty::{self};
use rustc_span::sym;

use super::SUSPICIOUS_TO_OWNED;

pub fn check(c
    
pub fn check(cx: &LateContext<'_>, expr: &hir::Expr<'_>, recv: &hir::Expr<'_>) -> bool {
    if let Some(method_def_id) = cx.typeck_results().type_dependent_def_id(expr.hir_id)
        && is_diag_trait_item(cx, method_def_id, sym::ToOwned)
        && let input_type = cx.typeck_results().expr_ty(expr)
        && let ty::Adt(adt, _) = cx.typeck_results().expr_ty(expr).kind()
        && cx.tcx.is_diagnostic_item(sym::Cow, adt.did())
    {
        let mut app = Applicability::MaybeIncorrect;
        let recv_snip = snippet_with_context(cx, recv.span, expr.span.ctxt(), "..", &mut app).0;
        span_lint_and_then(
            cx,
            SUSPICIOUS_TO_OWNED,
            expr.span,
            &with_forced_trimmed_paths!(format!(
                "this `to_owned` call clones the {input_type} itself and does not cause the {input_type} contents to become owned"
            )),
            |diag| {
                diag.span_suggestion(
                    expr.span,
                    "depending on intent, either make the Cow an Owned variant",
                    format!("{recv_snip}.into_owned()"),
                    app,
                );
                diag.span_suggestion(
                    expr.span,
                    "or clone the Cow itself",
                    format!("{recv_snip}.clone()"),
                    app,
                );
            },
        );
        return true;
    }
    false
}