code: def _resolve_target(
      target_keys: Union[str, List[str]], element: Dict[str, Any]
  ) -> Dict[str, Any]:
      if not isinstance(target_keys, List):
          element[DataKeys.TARGET] = element.pop(target_keys)
      else:
          element[DataKeys.TARGET] = [
              element[target_key] for target_key in target_keys
          ]
      return element
  
imports: from functools import partial
  from typing import Any, Dict, List, Optional, Union
  import pandas
  from flash.core.data.io.classification_input import ClassificationInputMixin
  from flash.core.data.io.input import DataKeys, Input
  from flash.core.data.utilities.classification import MultiBinaryTargetFormatter, TargetFormatter
  from flash.core.data.utilities.loading import load_data_frame
  from flash.core.data.utilities.paths import PATH_TYPE
  from flash.core.utilities.imports import _TOPIC_TEXT_AVAILABLE, requires
label_desc: Use image node_id 1 for calling the TextClassificationInput obj's underlying member method code with example usage: obj._resolve_target(target_keys, element) and returns: element