NSSet <NSString> SelectableLayersFromSources(string [] layersId)
{
if (layersId == null)
{
return(null);
}
NSMutableSet <NSString> output = new NSMutableSet <NSString>();
foreach (string layerId in layersId)
{
var acceptedId = layerId.Replace("_", "-");
output.Add((NSString)acceptedId);
output.Add((NSString)(acceptedId + " (1)"));
}
return(output.Copy() as NSSet <NSString>);
}