docstr: Get the phase of the environment
  :return: the current phase
code: def phase(self) -> RunPhase:
      """
      Get the phase of the environment
      :return: the current phase
      """
      return self._phase
  
file_path: coach/rl_coach/environments/environment_interface.py
imports: from typing import Union, Dict
  from rl_coach.core_types import ActionType, EnvResponse, RunPhase
  from rl_coach.spaces import ActionSpace
label_desc: Use image node_id 2 for calling the EnvironmentInterface obj's underlying member method code with example usage: obj.phase() and returns: self