code: def i_update_with_masks(self, targets, positions, masks):
      for name, value in targets.items():
          self._data[name].i_update_with_masks(value, positions, masks)
      return self
  
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 5 for calling the HistogramValuesContainer obj's underlying member method code with example usage: obj.i_update_with_masks(targets, positions, masks) and returns: self