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: to_bits.rs
    path of file: ./repos/snarkVM/console/program/src/id
    
    the code of the file until where you have to start completion: // Copyright (C) 2019-2023 Aleo Systems Inc.
// This file is part of the snarkVM library.

// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at:
// http://www.apache.org/licenses/LICENSE-2.0

// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use super::*;

impl<N: Network> ToBits for ProgramID<N> {
    /// Returns the little-endian bits of the program ID.
    fn write_bits_le(&self, vec: &mut Vec<bool>) {
        (&self).write_bits_le(vec);
    }

    /// Returns the big-endian bits of the program ID.
    fn write_bits_be(&self, vec: &mut Vec<bool>) {
        (&self).write_bits_be(vec);
    }
}

impl<N: Network> ToBits for &ProgramID<N> {
    /// Returns the little-endian bits of the program ID.
    fn write_bits_le(&self, vec: &mu
    
    fn test_to_bits_le() -> Result<()> {
        let mut rng = TestRng::default();

        for _ in 0..ITERATIONS {
            // Sample a random fixed-length alphanumeric string, that always starts with an alphabetic character.
            let expected_name_string = sample_lowercase_identifier_as_string::<CurrentNetwork>(&mut rng)?;
            // Recover the field element from the bits.
            let expected_name_field = Field::<CurrentNetwork>::from_bits_le(&expected_name_string.to_bits_le())?;
            let expected_network_field = Field::<CurrentNetwork>::from_bits_le(&"aleo".to_string().to_bits_le())?;
            // Compute the expected bits.
            let mut expected_bits = expected_name_field.to_bits_le()[..expected_name_string.len() * 8].to_vec();
            expected_bits.extend(&expected_network_field.to_bits_le()[..4 * 8]);

            let candidate = ProgramID::<CurrentNetwork>::from_str(&format!("{expected_name_string}.aleo"))?;
            assert_eq!(
                expected_name_field.to_bits_le()[..expected_name_string.len() * 8],
                candidate.name().to_bits_le()
            );
            assert_eq!(expected_network_field.to_bits_le()[..4 * 8], candidate.network().to_bits_le());
            assert_eq!(expected_bits, candidate.to_bits_le());
        }
        Ok(())
    }