/// <summary>
/// Retrieves, from this table or its ancestors, the nearest-scoped function having the given name.
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
public Opt <TriflesXPathExtensionFunction> GetFunctionOpt(XName name)
{
return(functions.GetOpt(name));
}
protected override Opt <TValuex> GetInheritedOpt(TKeyx key)
{
return(parent.GetOpt(key));
}
/// <summary>
/// Retrieves, from this table or its ancestors, the nearest-scoped variable having the given name.
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
public Opt <TriflesXPathExtensionVariable> GetVariableOpt(XName name)
{
return(variables.GetOpt(name));
}