Identifier of a chat in which the thumbnail will be shown. Use 0 if unknown.
Map height in pixels before applying scale; 16-1024.
Location of the map center.
Map scale; 1-3.
Map width in pixels before applying scale; 16-1024.
Map zoom level; 13-20.
Returns information about a file with a map thumbnail in PNG format. Only map thumbnail files with size less than 1MB can be downloaded. Request type for Tdjson#getMapThumbnailFile.