docstr: Tests that after reset() the view_requirement connector will
  create a fresh new agent collector.
docstr_tok: ["Tests","that","after","reset","(",")","the","view_requirement","connector","will","create","a","fresh","new","agent","collector","."]
code: def test_vr_connector_default_agent_collector_is_empty(self):
      """Tests that after reset() the view_requirement connector will
      create a fresh new agent collector.
      """
      view_rqs = {
          "obs": ViewRequirement(
              None,
              used_for_training=True,
              used_for_compute_actions=True,
          ),
      }
  
      config = PPOConfig().to_dict()
      ctx = ConnectorContext(
          view_requirements=view_rqs,
          config=config,
          is_policy_recurrent=False,
      )
  
      c = ViewRequirementAgentConnector(ctx)
      c.in_training()
  
      for i in range(5):
          obs_arr = np.array([0, 1, 2, 3]) + i
          agent_data = {SampleBatch.NEXT_OBS: obs_arr}
          data = AgentConnectorDataType(0, 1, agent_data)
  
          # Feed ViewRequirementAgentConnector 5 samples.
          c([data])
  
      # 1 init_obs, plus 4 agent steps.
      self.assertEqual(c.agent_collectors[0][1].agent_steps, 4)
  
      # Reset.
      c.reset(0)  # env_id = 0
  
      # Process a new timestep.
      obs_arr = np.array([0, 1, 2, 3]) + i
      agent_data = {SampleBatch.NEXT_OBS: obs_arr}
      data = AgentConnectorDataType(0, 1, agent_data)
  
      # Feed ViewRequirementAgentConnector 5 samples.
      c([data])
  
      # Start fresh with 0 agent step.
      self.assertEqual(c.agent_collectors[0][1].agent_steps, 0)
  
imports: import gymnasium
  from gymnasium.spaces import Box
  import numpy
  import tree
  import unittest
  from ray.rllib.algorithms.ppo.ppo import PPOConfig
  from ray.rllib.connectors.agent.clip_reward import ClipRewardAgentConnector
  from ray.rllib.connectors.agent.lambdas import FlattenDataAgentConnector
  from ray.rllib.connectors.agent.obs_preproc import ObsPreprocessorConnector
  from ray.rllib.connectors.agent.pipeline import AgentConnectorPipeline
  from ray.rllib.connectors.agent.state_buffer import StateBufferConnector
  from ray.rllib.connectors.agent.view_requirement import ViewRequirementAgentConnector
  from ray.rllib.connectors.connector import ConnectorContext
  from ray.rllib.connectors.registry import get_connector
  from ray.rllib.policy.view_requirement import ViewRequirement
  from ray.rllib.policy.sample_batch import SampleBatch
  from ray.rllib.utils.test_utils import check
  from ray.rllib.utils.typing import ActionConnectorDataType, AgentConnectorDataType, AgentConnectorsOutput
  from ray.rllib.connectors.agent.mean_std_filter import MeanStdObservationFilterAgentConnector
label_desc: Use image node_id 7 for calling the TestViewRequirementAgentConnector obj's underlying member method code with example usage: obj.test_vr_connector_default_agent_collector_is_empty() without return types