Including "Show hidden lines" when using #include & anchor

[Blisto91]

When including parts of a file with #include and anchor is it possible to enable the "show hidden lines" button without showing the whole file as in #rustdoc_include ?
Something along the lines of

// More code

//ANCHOR_HIDDEN: foo
fn main() {
// ANCHOR: foo
    let x = add_one(2);
// ANCHOR_END: foo
    assert_eq!(x, 3);
}

fn add_one(num: i32) -> i32 {
    num + 1
}
// ANCHOR_HIDDEN_END: foo

// More code