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: polling_http.rs
    path of file: ./repos/arroyo/arroyo-connectors/src
    
    the code of the file until where you have to start completion: use std::collections::HashMap;
use std::convert::Infallible;

use anyhow::anyhow;
use arroyo_rpc::{var_str::VarStr, OperatorConfig};
use arroyo_types::string_to_map;
use axum::response::sse::Event;
use reqwest::{Client, Request};
use tokio::sync::mpsc::Sender;
use typify::import_types;

use arroyo_rpc::api_types::connections::{
    ConnectionProfile, ConnectionSchema, ConnectionType, TestSourceMessage,
};
use serde::{Deserialize, Serialize};

use crate::{constru
    
    fn metadata(&self) -> arroyo_rpc::api_types::connections::Connector {
        arroyo_rpc::api_types::connections::Connector {
            id: "polling_http".to_string(),
            name: "Polling HTTP".to_string(),
            icon: ICON.to_string(),
            description: "Poll an HTTP server to produce events".to_string(),
            enabled: true,
            source: true,
            sink: false,
            testing: true,
            hidden: false,
            custom_schemas: true,
            connection_config: None,
            table_config: TABLE_SCHEMA.to_owned(),
        }
    }