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  1. or download this
    fetch("google.com") > my $content;

...
url("google.com")->() >> _self | _save_as_tree("./root");
$_->() | _save_as_tree("./root") while $_;
  2. or download this
    my $content = fetch("google.com");
  3. or download this
    url("google.com")->() >> _self | _save_as_tree("./root");
  4. or download this
    # hmmm, looks confusing:
save_as_tree("./root", fetch( url("google.com") ) ); 
...
my $url = Some::Module::Name->new( url => "google.com" );
$url->fetch;
$url->save_as_tree("./root");