text: import aigame
  from aigame.spaces import prng
  import numpy as np
  
  class MultiBinary(aigame.Space):
      def __init__(self, n):
          self.n = n
      def sample(self):
          return prng.np_random.randint(low=0, high=2, size=self.n)
      def contains(self, x):
          return ((x==0) | (x==1)).all()
      def to_jsonable(self, sample_n):
          return sample_n.tolist()
      def from_jsonable(self, sample_n):
          return np.array(sample_n)