SYNOPSIS

   package MyLibrary;

   use Moose;
   extends 'Dallycot::Library';

   ns 'http://www.example.com/library#';

   define foo => << 'EOD';
     (a, b) :> ((a * b) mod (b - a))
   EOD

   define bar => sub {
     my($library, $engine, $options, @params) = @_;
     # Perl implementation
   };