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diff --git a/lib/DBIx/Class/PK/Auto.pm b/lib/DBIx/Class/PK/Auto.pm
index 98e3b89..b4d509c 100644
--- a/lib/DBIx/Class/PK/Auto.pm
+++ b/lib/DBIx/Class/PK/Auto.pm
@@ -1,25 +1,55 @@
 package DBIx::Class::PK::Auto;
 
+#use base qw/DBIx::Class::PK/;
+use base qw/DBIx::Class/;
 use strict;
 use warnings;
 
-sub insert {
-  my ($self, @rest) = @_;
-  my $ret = $self->NEXT::ACTUAL::insert(@rest);
-  my ($pri, $too_many) =
-    (grep { $self->_primaries->{$_}{'auto_increment'} }
-       keys %{ $self->_primaries })
-    || (keys %{ $self->_primaries });
-  die "More than one possible key found for auto-inc on ".ref $self
-    if $too_many;
-  unless (defined $self->get_column($pri)) {
-    die "Can't auto-inc for $pri on ".ref $self.": no _last_insert_id method"
-      unless $self->can('_last_insert_id');
-    my $id = $self->_last_insert_id;
-    die "Can't get last insert id" unless $id;
-    $self->store_column($pri => $id);
-  }
-  return $ret;
-}
-
 1;
+
+__END__
+
+=head1 NAME
+
+DBIx::Class::PK::Auto - Automatic primary key class
+
+=head1 SYNOPSIS
+
+use base 'DBIx::Class::Core';
+__PACKAGE__->set_primary_key('id');
+
+=head1 DESCRIPTION
+
+This class overrides the insert method to get automatically incremented primary
+keys.
+
+PK::Auto is now part of Core.
+
+See L<DBIx::Class::Manual::Component> for details of component interactions.
+
+=head1 LOGIC
+
+C<PK::Auto> does this by letting the database assign the primary key field and
+fetching the assigned value afterwards.
+
+=head1 METHODS
+
+=head2 insert
+
+The code that was handled here is now in Row for efficiency.
+
+=head2 sequence
+
+The code that was handled here is now in ResultSource, and is being proxied to
+Row as well.
+
+=head1 FURTHER QUESTIONS?
+
+Check the list of L<additional DBIC resources|DBIx::Class/GETTING HELP/SUPPORT>.
+
+=head1 COPYRIGHT AND LICENSE
+
+This module is free software L<copyright|DBIx::Class/COPYRIGHT AND LICENSE>
+by the L<DBIx::Class (DBIC) authors|DBIx::Class/AUTHORS>. You can
+redistribute it and/or modify it under the same terms as the
+L<DBIx::Class library|DBIx::Class/COPYRIGHT AND LICENSE>.