docstr: Should return a persisted version of the Dataset.
docstr_tok: ["Should","return","a","persisted","version","of","the","Dataset","."]
code: def persist(cls, dataset):
      """
      Should return a persisted version of the Dataset.
      """
      return dataset
  
imports: import sys
  import warnings
  import numpy
  import param
  from ..None import util
  from ..element import Element
  from ..ndmapping import NdMapping
  from .util import finite_range
label_desc: Use image node_id 8 for calling the Interface obj's underlying member method code with example usage: obj.persist(cls, dataset) and returns: dataset