# File lib/mime/types.rb, line 458
458:     def to_hash
459:       { 'Content-Type'              => @content_type,
460:         'Content-Transfer-Encoding' => @encoding,
461:         'Extensions'                => @extensions,
462:         'System'                    => @system,
463:         'Obsolete'                  => @obsolete,
464:         'Docs'                      => @docs,
465:         'URL'                       => @url,
466:         'Registered'                => registered?,
467:       }
468:     end