class_docstr: Sets a field in the dictionary with the given value.
  
  Parameters
  ----------
  output_field
      Name of the field that will be set
  value
      Value to be set
code: def transform(self, data: DataEntry) -> DataEntry:
      data[self.output_field] = self.value
      return data
  
imports: from collections import Counter
  from typing import Any, Dict, List
  from gluonts.core.component import validated
  from gluonts.dataset.common import DataEntry
  from ._base import MapTransformation, SimpleTransformation
label_desc: Use image node_id 2 for calling the SetField obj's underlying member method code with example usage: obj.transform(data) and returns: data