/// <summary>
/// Initialize to TPL blocks
/// </summary>
protected void InitBlocks()
{
_fanartActionBlock = new FanArtActionBlock();
//Bounded capacity of 2 means there is at max 1 cleanup task running and 1 waiting
_fanartCleanupBlock = new ActionBlock <bool>(_ => CleanupFanArt(),
new ExecutionDataflowBlockOptions {
BoundedCapacity = 2
});
}