OK, here's a fully functional handler module that uses that syntax:

package TestHandler;

use strict;

use Apache::Constants qw(:common);

sub handler : method {
  my($class, $r) = @_;

  $r->content_type('text/plain');
  $r->send_http_header;
  $r->print( qq(
      Class: $class
      Perl: $]
      mod_perl: $Apache::VERSION
    )
  );

  return OK;
}

1;
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Here's the relevant httpd.conf entry:

<Location /test>
   SetHandler      perl-script
   PerlHandler     TestHandler
</Location>
[download]

And here's the output:

      Class: TestHandler
      Perl: 5.006001
      mod_perl: 1.27
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