/// <summary>
/// Sets value for key. If item exists for alt key, replace it.
/// </summary>
public static void SetOrChange(this PDictionary dict, string key, string altKey, string value)
{
var keyItem = dict.Get <PString> (key);
var altItem = dict.Get <PString> (altKey);
if (keyItem == null)
{
if (altItem != null)
{
dict.ChangeKey(altItem, key);
altItem.Value = value;
}
else
{
dict[key] = new PString(value);
}
}
else
{
if (altItem != null)
{
dict.Remove(altKey);
}
keyItem.Value = value;
}
}
