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: bytes.rs
    path of file: ./repos/snarkVM/ledger/block/src/transition/input
    
    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> FromBytes for Input<N> {
    /// Reads the input from a buffer.
    fn read_le<R: Read>(mut reader: R) -> IoResult<Self> {
        let variant = Variant::read_le(&mut reader)?;
        let literal = match variant {
            0 => {
                let plaintext_hash: Field<N> = FromBytes::read_le(&mut reader)?;
                let plaintext_exists: bool = FromBytes::read_le(&mut reader)?;
                let plaintext = match plaintext_exists {
                    true => Some(FromBytes::read_le(&mut reader)?),
                    false => None,
                };

                Self::Constant(plaintext_hash, plaintext)
            }
            1 => {
                let plaintext_hash: Field<N> = FromBytes::read_le(&mut reader)?;
                let plaintext_exists: bool = FromBytes::read_le(&mut reader)?;
                let plaintext = match plaintext_exists {
                    true => Some(FromBytes::read_le(&mut reader)?),
                    false => None,
                };
                Self::Public(plaintext_hash, plaintext)
            }
            2 => {
                let ciphert
    
    fn read_le<R: Read>(mut reader: R) -> IoResult<Self> {
        let variant = Variant::read_le(&mut reader)?;
        let literal = match variant {
            0 => {
                let plaintext_hash: Field<N> = FromBytes::read_le(&mut reader)?;
                let plaintext_exists: bool = FromBytes::read_le(&mut reader)?;
                let plaintext = match plaintext_exists {
                    true => Some(FromBytes::read_le(&mut reader)?),
                    false => None,
                };

                Self::Constant(plaintext_hash, plaintext)
            }
            1 => {
                let plaintext_hash: Field<N> = FromBytes::read_le(&mut reader)?;
                let plaintext_exists: bool = FromBytes::read_le(&mut reader)?;
                let plaintext = match plaintext_exists {
                    true => Some(FromBytes::read_le(&mut reader)?),
                    false => None,
                };
                Self::Public(plaintext_hash, plaintext)
            }
            2 => {
                let ciphertext_hash: Field<N> = FromBytes::read_le(&mut reader)?;
                let ciphertext_exists: bool = FromBytes::read_le(&mut reader)?;
                let ciphertext = match ciphertext_exists {
                    true => Some(FromBytes::read_le(&mut reader)?),
                    false => None,
                };
                Self::Private(ciphertext_hash, ciphertext)
            }
            3 => {
                // Read the serial number.
                let serial_number: Field<N> = FromBytes::read_le(&mut reader)?;
                // Read the tag.
                let tag: Field<N> = FromBytes::read_le(&mut reader)?;
                // Return the record.
                Self::Record(serial_number, tag)
            }
            4 => Self::ExternalRecord(FromBytes::read_le(&mut reader)?),
            5.. => return Err(error(format!("Failed to decode transition input variant {variant}"))),
        };
        Ok(literal)
    }