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: range.rs
    path of file: ./repos/tantivy/sstable/src/value
    
    the code of the file until where you have to start completion: use std::io;
use std::ops::Range;

use crate::value::{deserialize_vint_u64, ValueReader, ValueWriter};

/// See module comment.
#[derive(Default)]
pub struct RangeValueReader {
    vals: Vec<Range<u64>>,
}

impl ValueReader for RangeValueReader {
    type Value = Range<u64>;

    #[inline(always)]
    fn value(&self, idx: usize) -> &Range<u64> {
        &self.vals[idx]
    }

    fn load(&mut self, mut data: &[u8]) -> io::Result<usize> {
        self.vals.clear();
        let original_num_bytes = data.len();
        let le
    
    fn test_range_reader_writer() {
        crate::value::tests::test_value_reader_writer::<_, RangeValueReader, RangeValueWriter>(&[]);
        crate::value::tests::test_value_reader_writer::<_, RangeValueReader, RangeValueWriter>(&[
            0..3,
        ]);
        crate::value::tests::test_value_reader_writer::<_, RangeValueReader, RangeValueWriter>(&[
            0..3,
            3..10,
        ]);
        crate::value::tests::test_value_reader_writer::<_, RangeValueReader, RangeValueWriter>(&[
            0..0,
            0..10,
        ]);
        crate::value::tests::test_value_reader_writer::<_, RangeValueReader, RangeValueWriter>(&[
            100..110,
            110..121,
            121..1250,
        ]);
    }