pub fn track_by_id(&self, track_id: u32) -> Option<&TrackBox> {
        self.tracks().iter().find_map(|&t| {
            if t.track_id() == track_id {
                Some(t)
            } else {
                None
            }
        })
    }
/// Get the track by id.
Get the track by id.
Get the track by id .
pub fn track_by_id(&self, track_id: u32) -> Option<&TrackBox> {
        self.tracks().iter().find_map(|&t| {
            if t.track_id() == track_id {
                Some(t)
            } else {
                None
            }
        })
    }
pub fn track_by_id ( & self , track_id : u32 ) -> Option < & TrackBox > { self . tracks ( ) . iter ( ) . find_map ( | & t | { if t . track_id ( ) == track_id { Some ( t ) } else { None } } ) }
Get the track by id.
Get the track by id .
&self
track_id
u32
&self
track_id
u32