/// <summary>
/// Returns a new instance that is a copy of the original one.
/// </summary>
/// <param name="settings">A dictionary containing the names and values of the properties
/// that has to be changed with respect to the original ones, or null if these changes
/// are not needed.</param>
/// <returns>A new instance.</returns>
public DataEngine Clone(IDictionary <string, object> settings)
{
var cloned = new DataEngine();
OnClone(cloned, settings); return(cloned);
}
/// <summary>
/// Returns a new instance that is a copy of the original one.
/// </summary>
/// <returns>A new instance.</returns>
public DataEngine Clone()
{
var cloned = new DataEngine();
OnClone(cloned, null); return(cloned);
}