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: affix.rs
    path of file: ./repos/quilkin/src/filters/capture
    
    the code of the file until where you have to start completion: use crate::{net::endpoint::metadata::Value, pool::PoolBuffer};
use bytes::Bytes;

/// Returns whether the capture size is
    
    fn capture(&self, contents: &mut PoolBuffer) -> Option<Value> {
        is_valid_size(contents, self.size).then(|| {
            if self.remove {
                Value::Bytes(Bytes::copy_from_slice(
                    contents.split_prefix(self.size as _),
                ))
            } else {
                Value::Bytes(Bytes::copy_from_slice(&contents[..self.size as _]))
            }
        })
    }