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    my $cgi = CGI->new;
    my $self = {    
        OBJ_cgi     => $cgi
    };

    my $r = Apache2::RequestUtil->request;
    my $req = Apache2::Request->new($r);
    my @upload = eval { $req->upload() };
    print STDERR Dumper($@);

NAMES: $VAR1 = bless( {
                 'rc' => 70014,
...
                 'line' => 50
               }, 'APR::Request::Error' );

        <form action="uploaddocument.cgi" method="POST" enctype="multi
+part/form-data">
            <input type="file" name="file_content">
...
            <input type="hidden" name="save" value="1">
            <input type="submit" value="Upload file">
        </form>

    my $fh = $self->{OBJ_cgi}->upload('file_content');
    print STDERR Dumper($fh);

    my $r = Apache2::RequestUtil->request;
    my $req = Apache2::Request->new($r);