So, then if I use something like this, it should work?

my $nt = Net::Twitter->new(
   traits   => [qw/API::REST/],
   username => $username,
   password => $pwd,
   apihost => "/users/show/".$TwitterID.".xml"
  );
        
my $result = $nt->show_user;
[download]

The API url defaults to http://twitter.com, and I assume that the apihost, would be the remainder of the REST call, and by calling show_user, instead of show_user(id) -- while using an apihost that terminates with .xml, I am guaranteed a response that's an xml string. The documentation was not clear on what format I should expect if I use show_user(id), which would assume the default apihost.