private Method TraversePrefixUnaryExpressions(PrefixUnaryExpressionSyntax pues)
        {
            Method retMethod = new Method();

            if (pues.HasLeadingTrivia)
            {
                SetOuterComments(retMethod, pues.GetLeadingTrivia().ToFullString());
            }

            if (pues.HasTrailingTrivia)
            {
                SetInnerComments(retMethod, pues.GetTrailingTrivia().ToFullString());
            }

            var vars = from aVar in pues.ChildNodes().OfType<IdentifierNameSyntax>() select aVar;
            foreach (IdentifierNameSyntax ins in vars)
            {
                Variables tempVar = new Variables();
                tempVar.Name = ins.Identifier.ValueText;
                retMethod.AccessedVariables.Add(tempVar);
            }
            return retMethod;
        }