Even if there is no document, you can check the source code of NAnt extension. As long as you are familiar with C#, you will find the code are self-describing.
If you are asking about nuget-update, from the source you can see:
[TaskName("nuget-update")]
public class NugetUpdateTask : Task
{
[TaskAttribute("solution-dir", Required = true)]
public DirectoryInfo SolutionDir { get; set; }
[TaskAttribute("repository", Required = false)]
public DirectoryInfo RepositoryPath { get; set; }
//...
Usage would be:
<nuget-update solution-dir="file:///your/solution/dir" repository="file:///your-repository" />
And you probably already noticed, solution-dir
is required, but repository
is not.
Same for nuget-get-files
.