/**
  * Gets the static instance of this class.
  *
  * @return ServicesBuilder
  */
 public static function getInstance()
 {
     if (!isset(self::$_instance)) {
         self::$_instance = new ServicesBuilder();
     }
     return self::$_instance;
 }
 /**
  * Gets the static instance of this class.
  *
  * @return ServicesBuilder
  */
 public static function getInstance()
 {
     if (!isset(self::$_instance)) {
         self::$_instance = new self();
     }
     return self::$_instance;
 }