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: parsed.rs
    path of file: ./repos/chrono/src/format
    
    the code of the file until where you have to start completion: // This is a part of Chrono.
// See README.md and LICENSE.txt for details.

//! A collection of parsed date and time items.
//! They can be constructed incrementally while being checked for consistency.

use super::{ParseResult, IMPOSSIBLE, NOT_ENOUGH, OUT_OF_RANGE};
use crate::naive::{NaiveDate, NaiveDateTime, NaiveTime};
use crate::offset::{FixedOffset, LocalResult, Offset, TimeZone};
use crate::{DateTime, Datelike, TimeDelta, Timelike, Weekday};

/// A type to hold parsed fields of date and 
    
    fn test_parsed_to_datetime_with_timezone() {
        macro_rules! parse {
            ($tz:expr; $($k:ident: $v:expr),*) => (
                Parsed { $($k: Some($v),)* ..Parsed::new() }.to_datetime_with_timezone(&$tz)
            )
        }

        // single result from ymdhms
        assert_eq!(
            parse!(Utc;
                          year: 2014, ordinal: 365, hour_div_12: 0, hour_mod_12: 4,
                          minute: 26, second: 40, nanosecond: 12_345_678, offset: 0),
            Ok(Utc
                .from_local_datetime(
                    &NaiveDate::from_ymd_opt(2014, 12, 31)
                        .unwrap()
                        .and_hms_nano_opt(4, 26, 40, 12_345_678)
                        .unwrap()
                )
                .unwrap())
        );
        assert_eq!(
            parse!(Utc;
                          year: 2014, ordinal: 365, hour_div_12: 1, hour_mod_12: 1,
                          minute: 26, second: 40, nanosecond: 12_345_678, offset: 32400),
            Err(IMPOSSIBLE)
        );
        assert_eq!(
            parse!(FixedOffset::east_opt(32400).unwrap();
                          year: 2014, ordinal: 365, hour_div_12: 0, hour_mod_12: 4,
                          minute: 26, second: 40, nanosecond: 12_345_678, offset: 0),
            Err(IMPOSSIBLE)
        );
        assert_eq!(
            parse!(FixedOffset::east_opt(32400).unwrap();
                          year: 2014, ordinal: 365, hour_div_12: 1, hour_mod_12: 1,
                          minute: 26, second: 40, nanosecond: 12_345_678, offset: 32400),
            Ok(FixedOffset::east_opt(32400)
                .unwrap()
                .from_local_datetime(
                    &NaiveDate::from_ymd_opt(2014, 12, 31)
                        .unwrap()
                        .and_hms_nano_opt(13, 26, 40, 12_345_678)
                        .unwrap()
                )
                .unwrap())
        );

        // single result from timestamp
        assert_eq!(
            parse!(Utc; timestamp: 1_420_000_000, offset: 0),
            Ok(Utc.with_ymd_and_hms(2014, 12, 31, 4, 26, 40).unwrap())
        );
        assert_eq!(parse!(Utc; timestamp: 1_420_000_000, offset: 32400), Err(IMPOSSIBLE));
        assert_eq!(
            parse!(FixedOffset::east_opt(32400).unwrap(); timestamp: 1_420_000_000, offset: 0),
            Err(IMPOSSIBLE)
        );
        assert_eq!(
            parse!(FixedOffset::east_opt(32400).unwrap(); timestamp: 1_420_000_000, offset: 32400),
            Ok(FixedOffset::east_opt(32400)
                .unwrap()
                .with_ymd_and_hms(2014, 12, 31, 13, 26, 40)
                .unwrap())
        );

        // TODO test with a variable time zone (for None and Ambiguous cases)
    }