/// <summary>
/// The OnLopla semantic action
/// </summary>
public virtual void OnLopla(Symbol head, SemanticBody body)
{
}
/// <summary>
/// The callback for the semantic action
/// </summary>
/// <param name="head">The semantic object for the head</param>
/// <param name="body">The current body at the time of the action</param>
public void Callback(Symbol head, SemanticBody body)
{
trace.Add(payload);
}
