staticfromBytes(bytes:Bytes):PaletteChunk
@:value({ createHeader : false })new(createHeader:Bool = false)
@:value([])entries:Map<Int, PaletteEntry> = []
@:value(0)firstColorIndex:Int = 0
@:value(-1)lastColorIndex:Int = -1
@:value(0)paletteSize:Int = 0
addEntry(entry:PaletteEntry):Void
header:ChunkHeader
read onlysize:Int
userData:UserDataChunk