Function shredded_get_path 

fn shredded_get_path(
    input: &VariantArray,
    path: &[VariantPathElement<'_>],
    as_field: Option<&Field>,
    cast_options: &CastOptions<'_>,
) -> Result<ArrayRef>

Follows the given path as far as possible through shredded variant fields. If the path ends on a shredded field, return it directly. Otherwise, use a row shredder to follow the rest of the path and extract the requested value on a per-row basis.