Weak hands cannot be planted, meager skills have no foundation. Shallow wisdom is futile, how can one hope for a good name?扰扰从役倦，屑屑身事微。少壮轻年月，迟暮惜光辉。
*/
private $keyphrase_usage_count;
/**
* The post types for the given post IDs.
*
* @var array
*/
private $keyphrase_usage_per_type;
/**
* The constructor.
*
* @param array $keyphrase_usage_count The keyphrase and the associated posts that use it.
* @param array $keyphrase_usage_per_type The post types for the given post IDs.
*/
public function __construct( array $keyphrase_usage_count, array $keyphrase_usage_per_type ) {
$this->keyphrase_usage_count = $keyphrase_usage_count;
$this->keyphrase_usage_per_type = $k