public override void Accept (GetDefaultExpression getAttr)
		{
			getAttr.Target.Visit (this);
			methodBuilder.EmitInstruction (getAttr.Location, Opcode.LoadAttributeOrNull,
				methodBuilder.Module.DefineConstant (new IodineName (getAttr.Field)));
		}
		public virtual void Accept (GetDefaultExpression getAttr)
		{
		}