Moose::Cookbook::Recipe63pm

  package Document::Page;
  use Moose;
  
  has 'body' => (is => 'rw', isa => 'Str', default => sub {''});
  
  sub create {
      my $self = shift;
      $self->open_page;
      inner();
      $self->close_page;
  }
  
  sub append_body { 
      my ($self, $appendage) = @_;
      $self->body($self->body . $appendage);
  }
  
  sub open_page  { (shift)->append_body('<page>') }
  sub close_page { (shift)->append_body('</page>') }  
  
  package Document::PageWithHeadersAndFooters;
  use Moose;
  
  extends 'Document::Page';
  
  augment 'create' => sub {
      my $self = shift;
      $self->create_header;
      inner();
      $self->create_footer;
  };
  
  sub create_header { (shift)->append_body('<header/>') }
  sub create_footer { (shift)->append_body('<footer/>') }  
  
  package TPSReport;
  use Moose;
  
  extends 'Document::PageWithHeadersAndFooters';
  
  augment 'create' => sub {
      my $self = shift;
      $self->create_tps_report;
  };
  
  sub create_tps_report {
     (shift)->append_body('<report type="tps"/>') 
  }
  
  print TPSReport->new->create # <page><header/><report type="tps"/><footer/></page>