code: def training_docs(self):
      if self.has_training_docs():
          if self._training_docs is None:
              self._training_docs = list(
                  self.dataset["train_r" + str(self.SPLIT)]
              )
          return self._training_docs
  
imports: import numpy
  from lm_eval.base import rf, Task
  from lm_eval.metrics import mean
label_desc: Use image node_id 4 for calling the ANLIBase obj's underlying member method code with example usage: obj.training_docs() and returns: self