Rust implementation of Fei Sun, Dandan Song and Lejian Liao paper:
Content Extraction via Text Density (CETD)
use dom_content_extraction::{DensityTree, get_node_text};
let dtree = DensityTree::from_document(&document); // &scraper::Html
let sorted_nodes = dtree.sorted_nodes();
let node_id = sorted_nodes.last().unwrap().node_id;
println!("{}", get_node_text(node_id, &document));