public TransformationResult <LocalDeclarationStatementSyntax> Transform(CompilationUnitSyntax root)
{
var variable = _local.Declaration.Variables.Single();
var newVariable = variable.WithInitializer(variable.Initializer.WithValue(_foreach.F(ToAggregate)));
var newLocal = _local.WithDeclaration(
_local.Declaration
.WithVariables(
newVariable.ItemToSeparatedList()));
root = root.TrackNodes(_local, _foreach);
root = root.RemoveNode(root.GetCurrentNode(_foreach), SyntaxRemoveOptions.KeepDirectives);
return(root.Transform(root.GetCurrentNode(_local), newLocal));
}