code: def get_metafeatures(self, dataset_name=None, features=None):
      if features is not None:
          metafeatures = self._get_metafeatures(features)
      else:
          metafeatures = self.metafeatures
      if dataset_name is not None:
          return metafeatures.loc[dataset_name]
      else:
          return metafeatures
  
imports: from collections import OrderedDict
  import numpy
  import pandas
  from ConfigSpace.configuration_space import Configuration
  from ConfigSpace.util import deactivate_inactive_hyperparameters
  from ..input import aslib_simple
  from ..metafeatures.metafeature import DatasetMetafeatures
label_desc: Use image node_id 5 for calling the MetaBase obj's underlying member method code with example usage: obj.get_metafeatures(dataset_name, features) and returns: metafeatures, metafeatures