private IMagickImage ExecuteCombine(XmlElement element, IMagickImageCollection collection)
{
Hashtable arguments = new Hashtable();
foreach (XmlAttribute attribute in element.Attributes)
{
arguments[attribute.Name] = Variables.GetValue <ColorSpace>(attribute);
}
if (arguments.Count == 0)
{
return(collection.Combine());
}
else if (OnlyContains(arguments, "colorSpace"))
{
return(collection.Combine((ColorSpace)arguments["colorSpace"]));
}
else
{
throw new ArgumentException("Invalid argument combination for 'combine', allowed combinations are: [] [colorSpace]");
}
}