void Build(DOMUsing @using)
{
Assert.IsFalse(string.IsNullOrEmpty(@using.textContent), "content is required for <using />");
m_File.AddInclude(@using.textContent);
}
void VisitIn(DOMUsing @using)
{
Assert.IsFalse(string.IsNullOrEmpty(@using.textContent), "content is required for <using />");
m_Usings.Add(@using);
}