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: dry_wet_mixer.rs
    path of file: ./repos/nih-plug/plugins/spectral_compressor/src
    
    the code of the file until where you have to start completion: // Spectral Compressor: an FFT based compressor
// Copyright (C) 2021-2024 Robbert van der Helm
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along wi
    
    pub fn write_dry(&mut self, buffer: &Buffer) {
        if buffer.channels() == 0 {
            return;
        }

        assert_eq!(buffer.channels(), self.delay_line.len());
        let delay_line_len = self.delay_line[0].len();
        assert!(buffer.samples() <= delay_line_len);

        let num_samples_before_wrap = buffer
            .samples()
            .min(delay_line_len - self.next_write_position);
        let num_samples_after_wrap = buffer.samples() - num_samples_before_wrap;

        for (buffer_channel, delay_line) in buffer
            .as_slice_immutable()
            .iter()
            .zip(self.delay_line.iter_mut())
        {
            delay_line
                [self.next_write_position..self.next_write_position + num_samples_before_wrap]
                .copy_from_slice(&buffer_channel[..num_samples_before_wrap]);
            delay_line[..num_samples_after_wrap]
                .copy_from_slice(&buffer_channel[num_samples_before_wrap..]);
        }

        self.next_write_position = (self.next_write_position + buffer.samples()) % delay_line_len;
    }