text: class Assertions:
      @staticmethod
      def a_eui(eui):
          assert isinstance(eui, bytes) and len(eui) == 8
  
      @staticmethod
      def a_str(value):
          assert isinstance(value, str)
  
      @staticmethod
      def a_bool(value):
          assert isinstance(value, bool)
  
      @staticmethod
      def a_int(value):
          assert isinstance(value, int)
  
      @staticmethod
      def a_float(value):
          assert isinstance(value, float)