class_docstr: 2-dimensional grid-world implementation with 5 actions (the 4 cardinal directions and staying put).
code: def sample_action(self):
      return np.random.randint(self.n_control)
  
imports: import numpy
  import matplotlib.pyplot
  import seaborn
  from pymdp.envs import Env
label_desc: Use image node_id 11 for calling the GridWorldEnv obj's underlying member method code with example usage: obj.sample_action() and returns: np