code: def get_required(self, name):
          
          locator = self._locate(name)
          if locator == None:
              raise ReferenceException(None, name)
          
          return self._references.get_required(locator)
docs: Gets all required dependencies by their name.
          At least one dependency must be present. If no dependencies was found it throws a [[ReferenceException]]
  
          :param name: the dependency name to locate.
  
          :return: a list with found dependencies.