public function testObjectCreationFactory()
 {
     $test_obj = Post_Primary_Tag::factory();
     $this->assertTrue(is_a($test_obj, 'Post_Primary_Tag'));
 }
/**
 * Return an instance of the class through the factory
 */
function run_post_primary_tag()
{
    return Post_Primary_Tag::factory();
}
/**
 *  Accessor for primary tag name
 * @param int $post_id the post id.
 * @return string primary tag name as string.
 */
function ppt_get_primary_tag_name($post_id)
{
    return Post_Primary_Tag::factory()->get_primary_tag_name($post_id);
}