class_docstr: An interface for collecting metrics/counters in EnvironmentLoop.
docstr: Returns metrics collected for the current episode.
code: def get_metrics(self) -> Dict[str, Number]:
      """Returns metrics collected for the current episode."""
  
file_path: acme/acme/utils/observers/base.py
imports: import abc
  from typing import Dict, Union
  import dm_env
  import numpy
label_desc: Use image node_id 3 for calling the EnvLoopObserver obj's underlying member method code with example usage: obj.get_metrics() without return types