tileset data in JSON format (http://docs.mapeditor.org/en/stable/reference/tmx-map-format/#tileset)
the tileset class
Tileset contains animated tiles
true if the tileset is a "Collection of Image" Tileset
return the tile image from a "Collection of Image" tileset
corresponding image or undefined
Optional
width: numberOptional
height: number
a TMX Tile Set Object