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: current_price.rs
    path of file: ./repos/tickrs/src/task
    
    the code of the file until where you have to start completion: use async_std::sync::Arc;
use futures::future::BoxFuture;

use super::*;
use crate::YAHOO_CRUMB;

/// Returns the current price, only if it has changed
pub
    
    fn task<'a>(input: Arc<Self::Input>) -> BoxFuture<'a, Option<Self::Response>> {
        Box::pin(async move {
            let symbol = input.as_ref();

            let crumb = YAHOO_CRUMB.read().clone();

            if let Some(crumb) = crumb {
                if let Ok(response) = crate::CLIENT.get_company_data(symbol, crumb).await {
                    let regular_price = response.price.regular_market_price.price;

                    let post_price = response.price.post_market_price.price;

                    let volume = response.price.regular_market_volume.fmt.unwrap_or_default();

                    return Some((regular_price, post_price, volume));
                }
            }

            None
        })
    }