public TameParenthesizedVariableDesignationSyntax AddVariable(TameVariableDesignationSyntax item)
 {
     item.TaParent = this;
     TaVariables.Add(item);
     item.IsChanged = true;
     return(this);
 }
 public override void Clear()
 {
     base.Clear();
     _taType        = null;
     _taDesignation = null;
 }