class_docstr: A setting meant only for saving an item count
  
  The HiddenCount setting should never be in the visible settings.
  It should be tied to a sequence variable which gives the number of
  items which is the value for this variable.
code: def set_value(self, value):
      if not value.isdigit():
          raise ValueError("The value must be an integer")
      count = int(value)
      if count == len(self.__sequence):
          # The value was "inadvertantly" set, but is correct
          return
      raise NotImplementedError(
          "The count should be inferred, not set  - actual: %d, set: %d"
          % (len(self.__sequence), count)
      )
  
file_path: CellProfiler/src/subpackages/core/cellprofiler_core/setting/_hidden_count.py
imports: from ._setting import Setting
label_desc: Use image node_id 2 for calling the HiddenCount obj's underlying member method code with example usage: obj.set_value(value) without return types