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: sink.rs
    path of file: ./repos/polars/crates/polars-pipe/src/executors/sinks/sort
    
    the code of the file until where you have to start completion: use std::any::Any;
use std::sync::{Arc, RwLock};
use std::time::Instant;

use polars_core::config::verbose;
use polars_core::error::PolarsResult;
use polars_core::frame::DataFrame;
use polars_core::prelude::{AnyValue, SchemaRef, Series, SortOptions};
use polars_core::utils::accumulate_dataframes_vertical_unchecked;
use polars_plan::prelude::SortArguments;

use crate::executors::sinks::io::{block
    
    fn store_chunk(&mut self, chunk: DataChunk) -> PolarsResult<()> {
        let chunk_bytes = chunk.data.estimated_size();
        if !self.ooc {
            let used = self.mem_track.fetch_add(chunk_bytes);
            let free = self.mem_track.get_available();

            // we need some free memory to be able to sort
            // so we keep 3x the sort data size before we go out of core
            if used * 3 > free {
                self.init_ooc()?;
                self.dump(true)?;
            }
        };
        // don't add empty dataframes
        if chunk.data.height() > 0 || self.chunks.is_empty() {
            self.current_chunks_size += chunk_bytes;
            self.current_chunk_rows += chunk.data.height();
            self.chunks.push(chunk.data);
        }
        Ok(())
    }