code: def _add_data_to_buffer(
      self, _buffer, batch_size, num_batches=5, **kwargs
  ):
      def _generate_data():
          return SampleBatch(
              {
                  SampleBatch.T: [np.random.random((4,))],
                  SampleBatch.ACTIONS: [np.random.choice([0, 1])],
                  SampleBatch.OBS: [np.random.random((4,))],
                  SampleBatch.NEXT_OBS: [np.random.random((4,))],
                  SampleBatch.REWARDS: [np.random.rand()],
                  SampleBatch.TERMINATEDS: [
                      np.random.choice([False, True])
                  ],
                  SampleBatch.TRUNCATEDS: [
                      np.random.choice([False, False])
                  ],
                  "batch_id": [self.batch_id],
              }
          )
  
      for i in range(num_batches):
          data = [_generate_data() for _ in range(batch_size)]
          self.batch_id += 1
          batch = concat_samples(data)
          _buffer.add(batch, **kwargs)
  
file_path: ray/python/ray/rllib/utils/replay_buffers/tests/test_replay_buffer.py
imports: import unittest
  import numpy
  from ray.rllib.policy.sample_batch import SampleBatch, MultiAgentBatch, concat_samples
  from ray.rllib.utils.replay_buffers.replay_buffer import ReplayBuffer
label_desc: Use image node_id 1 for calling the TestReplayBuffer obj's underlying member method code with example usage: obj._add_data_to_buffer(_buffer, batch_size, num_batches) and returns: SampleBatch