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: repr.rs
    path of file: ./repos/Daft/src/daft-core/src/array/ops
    
    the code of the file until where you have to start completion: use base64::Engine;

use crate::{
    array::{DataArray, FixedSizeListArray, ListArray, StructArray},
    datatypes::{
        logical::{
            DateArray, Decimal128Array, DurationArray, EmbeddingArray, FixedShapeImageArray,
            FixedShapeTensorArray, ImageArray, MapArray, TensorArray, TimeArray, TimestampArray,
       
    
    pub fn html_value(&self, idx: usize) -> String {
        use pyo3::prelude::*;

        let val = self.get(idx);

        let custom_viz_hook_result: Option<String> = Python::with_gil(|py| {
            // Find visualization hooks for this object's class
            let pyany = val.into_ref(py);
            let get_viz_hook = py
                .import("daft.viz.html_viz_hooks")?
                .getattr("get_viz_hook")?;
            let hook = get_viz_hook.call1((pyany,))?;

            if hook.is_none() {
                Ok(None)
            } else {
                hook.call1((pyany,))?.extract()
            }
        })
        .unwrap();

        match custom_viz_hook_result {
            None => html_escape::encode_text(&self.str_value(idx).unwrap())
                .into_owned()
                .replace('\n', "<br />"),
            Some(result) => result,
        }
    }