code: def citation(self):
          
          path = find_dataset_path(
              self.name, data_home=self.data_home, fname="meta.json", raises=False
          )
          if path is None:
              return None
  
          with open(path, 'r') as f:
              return f.read()
docs: Returns the contents of the citation.bib file that describes the source
          and provenance of the dataset or to cite for academic work.