public function seedSampleTree()
 {
     Model::unguard();
     $orange = CategoryNested::create(['name' => 'Category Orange', 'description' => 'A root level test category']);
     $autumn = $orange->children()->create(['name' => 'Autumn Leaves', 'description' => 'Disccusion about the season of falling leaves.']);
     $autumn->children()->create(['name' => 'September', 'description' => 'The start of the fall season.']);
     $october = $autumn->children()->create(['name' => 'October', 'description' => 'The middle of the fall season.']);
     $autumn->children()->create(['name' => 'November', 'description' => 'The end of the fall season.']);
     $orange->children()->create(['name' => 'Summer Breeze', 'description' => 'Disccusion about the wind at the ocean.']);
     $green = CategoryNested::create(['name' => 'Category Green', 'description' => 'A root level test category']);
     $green->children()->create(['name' => 'Winter Snow', 'description' => 'Disccusion about the frosty snow flakes.']);
     $green->children()->create(['name' => 'Spring Trees', 'description' => 'Disccusion about the blooming gardens.']);
     Model::reguard();
 }