Function describe 

pub fn describe(
    entry: &Entry,
    place_kind: Option<&'static str>,
    look: Option<CloudLook>,
    frame: usize,
    known_sources: Option<&[CloudConnectionConfig]>,
) -> RowLabel

What entry is called. look is a bucket directory’s look-up state, drawn at spinner frame; known_sources are the sources a URL can name, None where the trail already names it.