code: def reset(self, net):
      net.ResetCursor([self.cursor], [])
  
imports: from caffe2.python import core, workspace
  from caffe2.python.dataio import Reader, Writer
  from caffe2.python.schema import Struct, from_blob_list, from_column_list, InitEmptyRecord
  import numpy
label_desc: Use image node_id 4 for calling the _DatasetReader obj's underlying member method code with example usage: obj.reset(net) without return types