class_docstr: vector of envs to support vector reset and vector step.
  `vector_step` api will automatically reset envs which are done.
docstr: Returns:
      List of obs
docstr_tok: ["Returns",":","List","of","obs"]
code: def reset(self):
      """
      Returns:
          List of obs
      """
      return [env.reset() for env in self.envs]
  
imports: import six
  from collections import defaultdict
label_desc: Use image node_id 2 for calling the VectorEnv obj's underlying member method code with example usage: obj.reset() and returns: unknown