class_docstr: Implementation of the random-dot motion environment 
class_docstr_tok: ["Implementation","of","the","random-dot","motion","environment"]
code: def coherence(self):
      return 0.0 if self._dot_dir == "null" else self.dot_dist.max()
  
imports: from pymdp.envs import Env
  from pymdp import utils, maths
  import numpy
  from itertools import permutations, product
label_desc: Use image node_id 10 for calling the RandomDotMotion obj's underlying member method code with example usage: obj.coherence() and returns: unknown