/// <summary>
/// Get the NamespaceDefinition that correspond to the specified namespace.
/// </summary>
/// <param name="name">Name of the namespace</param>
/// <returns>A global NamespaceDefinition corresponding to the specified namespace</returns>
public static NamespaceDefinition GetDefinition(string name)
{
if (name == null)
throw new ArgumentNullException("name");
// note: "" (empty) is a valid namespace
NamespaceDefinition nd;
if (!cache.TryGetValue(name, out nd))
{
nd = new NamespaceDefinition(name);
cache.Add(name, nd);
}
return nd;
}