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: system.rs
    path of file: ./repos/flutter-rs/flutter-plugins/src
    
    the code of the file until where you have to start completion: //! Plugin to work with locales.
//! It handles flutter/localization type message.
use std::sync::Weak;

use serde::{Deserialize, Serialize};

use flutter_
    
    pub fn send_memory_pressure_warning(&self) {
        info!("Sending memory pressure warning");
        if let Some(channel) = self.channel.upgrade() {
            channel.send(SystemMsg {
                r#type: "memoryPressure".to_string(),
            });
        } else {
            error!("Failed to upgrade channel to send memory pressure warning");
        }
    }