code: def _info(self):
      return datasets.MetricInfo(
          description=_DESCRIPTION,
          citation=_CITATION,
          inputs_description=_KWARGS_DESCRIPTION,
          features=datasets.Features(
              {
                  "predictions": datasets.Sequence(
                      datasets.Value("string")
                  ),
                  "references": datasets.Sequence(
                      datasets.Value("string")
                  ),
              }
          ),
          codebase_urls=["https://github.com/ns-moosavi/coval"],
          reference_urls=[
              "https://github.com/ns-moosavi/coval",
              "https://www.aclweb.org/anthology/P16-1060",
              "http://www.conll.cemantix.org/2012/data.html",
          ],
      )
  
file_path: datasets/metrics/coval/coval.py
imports: import coval
  from coval.conll import reader, util
  from coval.eval import evaluator
  import datasets
label_desc: Use image node_id 1 for calling the Coval obj's underlying member method code with example usage: obj._info() and returns: datasets