SYNOPSIS
This is typically only constructed by planning hacks deep in the code, but might look like e.g.:
use v5.14;
use AtteanX::Plan::LDF::Triple;
my $ldf_plan = AtteanX::Plan::LDF::Triple->new(subject => $subject,
predicate => $predicate,
object => $object);
DESCRIPTION
This plan class will aid a query planner that seeks to incorporate Linked Data Fragments into the query planning.