} // end Scope constructor method.
//--- implement the IEnumerable interface;
//--- note this only iterates over symbols in the symbol table of this scope, it does not apply to any parent scopes.
//--- Note this must be implemented both for the Collections and Collections.Generic versions.
IEnumerator <ISymbol> IEnumerable <ISymbol> .GetEnumerator()
{
return(symbols.GetEnumerator());
}