private void AddUsingDirective(
ref CompilationUnitSyntax root,
ref NamespaceDeclarationSyntax namespaceToUpdate,
bool placeSystemNamespaceFirst,
UsingDirectiveSyntax usingDirective)
{
IList <UsingDirectiveSyntax> directives = new[] { usingDirective };
if (namespaceToUpdate != null)
{
namespaceToUpdate = namespaceToUpdate.AddUsingDirectives(
directives, placeSystemNamespaceFirst);
}
else
{
root = root.AddUsingDirectives(
directives, placeSystemNamespaceFirst);
}
}
