code: def get_reverb_buffer_and_observer(
      data_spec,
      sequence_length=None,
      table_name="uniform_table",
      table=None,
      reverb_server_address=None,
      port=None,
      replay_capacity=1000,
      min_size_limiter_size=1,
      stride_length=1,
  ):
      """Returns an instance of Reverb replay buffer and observer to add items.
  
      Either creates a local reverb server or uses a remote reverb server at
      reverb_sever_address (if set).
  
      If `reverb_server_address is None`, creates a local server with a uniform
      table underneath.
  
      Args:
        data_spec: spec of the data elements to be stored in the replay buffer
        sequence_length: integer specifying sequence_lenghts used to write to the
          given table.
        table_name: Name of the uniform table to create.
        table: Optional table for the backing local server. If None, automatically
          creates a uniform sampling table.
        reverb_server_address: Address of the remote reverb server, if None a local
          server is created.
        port: Port to launch the server in.
        replay_capacity: capacity of the local replay server, if using (i.e. if
          reverb_server_address is None).
        min_size_limiter_size: Minimum number of items required in the RB before
          sampling can begin, used for local server only.
        stride_length: Integer strides for the sliding window for overlapping
          sequences.
  
      Returns:
        A tuple consisting of:
          - reverb replay buffer instance
          - replay buffer observer
  
        Note: the if local server is created, it is not returned. It can be
          retrieved by calling local_server() on the returned replay buffer.
      """
  
      reverb_replay = get_reverb_buffer(
          data_spec=data_spec,
          sequence_length=sequence_length,
          table_name=table_name,
          table=table,
          reverb_server_address=reverb_server_address,
          port=port,
          replay_capacity=replay_capacity,
          min_size_limiter_size=min_size_limiter_size,
      )
  
      rb_observer = reverb_utils.ReverbAddTrajectoryObserver(
          reverb_replay.py_client,
          table_name,
          sequence_length=sequence_length,
          stride_length=stride_length,
      )
  
      return reverb_replay, rb_observer
  
imports: from tf_agents.replay_buffers import reverb_replay_buffer
  from tf_agents.replay_buffers import reverb_utils
  from tf_agents.specs import tensor_spec
  from tf_agents.utils import lazy_loader
label_desc: Use image node_id 3 for calling a global function with example usage: get_reverb_buffer_and_observer(data_spec, sequence_length, table_name, table, reverb_server_address, port, replay_capacity, min_size_limiter_size, stride_length) and returns: reverb_replay,  rb_observer