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: api.rs
    path of file: ./repos/proq/src
    
    the code of the file until where you have to start completion: //!
//! Proq client API
//!
//! This module provides Prometheus Query API related methods.

use std::str::FromStr;
use std::time::Duration;

use ::url::Url;
use chrono::offset::Utc;
use chrono::DateTime;
use http::{uri, Uri};
us
    
    ///# fn main() {
    ///#     let client = ProqClient::new_with_proto(
    ///#         "localhost:9090",
    ///#         ProqProtocol::HTTP,
    ///#         Some(Duration::from_secs(5)),
    ///#     ).unwrap();
    ///#
    ///#     futures::executor::block_on(async {
    /// let filtered_targets = client.targets_with_state(ProqTargetStates::DROPPED).await;
    ///#     });
    ///# }