Function dropbox_sdk::files::get_thumbnail_v2_app_auth

pub fn get_thumbnail_v2_app_auth(
    client: &impl AppAuthClient, 
    arg: &ThumbnailV2Arg, 
    range_start: Option<u64>, 
    range_end: Option<u64>
) -> Result<Result<HttpRequestResult<PreviewResult>, ThumbnailV2Error>>

Get a thumbnail for a file.