docstr: Returns the record(s) at the given index(es).
  
  Args:
      key: the index(es) of the record(s) to return. Can either be a single index or a slice.
  
  Returns:
      Either the record of the given index, or a list with the records at the given indexes.
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code: def __getitem__(
      self, key: Union[slice, int]
  ) -> Union["FeedbackRecord", List["FeedbackRecord"]]:
      """Returns the record(s) at the given index(es).
  
      Args:
          key: the index(es) of the record(s) to return. Can either be a single index or a slice.
  
      Returns:
          Either the record of the given index, or a list with the records at the given indexes.
      """
      if len(self._records) < 1:
          raise RuntimeError(
              "In order to get items from `FeedbackDataset` you need to add them first"
              " with `add_records`."
          )
      if isinstance(key, int) and len(self._records) < key:
          raise IndexError(
              f"This dataset contains {len(self)} records, so index {key} is out of range."
          )
      return self._records[key]
  
imports: import logging
  import textwrap
  import warnings
  from typing import TYPE_CHECKING, Any, Dict, Iterator, List, Optional, Tuple, Union
  from argilla.client.feedback.constants import FETCHING_BATCH_SIZE
  from argilla.client.feedback.dataset import helpers
  from argilla.client.feedback.dataset.base import FeedbackDatasetBase, R
  from argilla.client.feedback.dataset.local.mixins import ArgillaMixin, TaskTemplateMixin
  from argilla.client.feedback.dataset.mixins import MetricsMixin, UnificationMixin
  from argilla.client.feedback.integrations.huggingface.dataset import HuggingFaceDatasetMixin
  from argilla.client.feedback.schemas.enums import RecordSortField, SortOrder
  from argilla.client.feedback.schemas.records import FeedbackRecord
  from argilla.client.feedback.schemas.vector_settings import VectorSettings
  from argilla.client.feedback.training.schemas.base import TrainingTaskForChatCompletion, TrainingTaskForDPO, TrainingTaskForPPO, TrainingTaskForQuestionAnswering, TrainingTaskForRM, TrainingTaskForSentenceSimilarity, TrainingTaskForSFT, TrainingTaskForTextClassification, TrainingTaskTypes
  from argilla.client.models import Framework
label_desc: Use image node_id 11 for calling the FeedbackDataset obj's underlying member method code with example usage: obj.__getitem__(key) and returns: self