code: def __str__(self):
      result = ""
      for name, value in self._data.items():
          result += f"{name}: {value}\n"
      return result
  
imports: import typing
  from typing import MutableMapping
  from ._value import HistogramValues
  from ._plain import HistogramPlainValues
  from ._cipher import HistogramEncryptedValues
label_desc: Use image node_id 3 for calling the HistogramValuesContainer obj's underlying member method code with example usage: obj.__str__() and returns: result