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。
upgrader =& $upgrader;
}
}
/**
* Set the upgrader result and store it as a property in the parent class.
*
* @since 6.0.0
*
* @param object $result The result of the install process.
*/
public function set_result( $result ) {
$this->result = $result;
}
/**
* Empty out the header of its HTML content and only check to see if it has
* been performed or not.
*
* @since 6.0.0
*/
public function header() {
}
/**
* Empty out the footer of its HTML contents.
*
* @since 6.0.0
*/
public function footer() {
}
/**
* Instead of outputting HTML for errors, json_encode the errors and send