class_docstr: This class documents the dependency of one module on another
  
  A module is dependent on another if the dependent module requires
  data from the producer module. That data can be objects (label matrices),
  a derived image or measurements.
class_docstr_tok: ["This","class","documents","the","dependency","of","one","module","on","another","A","module","is","dependent","on","another","if","the","dependent","module","requires","data","from","the","producer","module",".","That","data","can","be","objects","(","label","matrices",")",",","a","derived","image","or","measurements","."]
docstr: Constructor
  
  source_module - the module that produces the data
  destination_module - the module that uses the data
  source_setting - the module setting that names the item (can be None)
  destination_setting - the module setting in the destination that
  picks the setting
docstr_tok: ["Constructor","source_module","-","the","module","that","produces","the","data","destination_module","-","the","module","that","uses","the","data","source_setting","-","the","module","setting","that","names","the","item","(","can","be","None",")","destination_setting","-","the","module","setting","in","the","destination","that","picks","the","setting"]
code: def __init__(
      self,
      source_module,
      destination_module,
      source_setting=None,
      destination_setting=None,
  ):
      """Constructor
  
      source_module - the module that produces the data
      destination_module - the module that uses the data
      source_setting - the module setting that names the item (can be None)
      destination_setting - the module setting in the destination that
      picks the setting
      """
      self.__source_module = source_module
      self.__destination_module = destination_module
      self.__source_setting = source_setting
      self.__destination_setting = destination_setting
  
label_desc: Use image node_id 1 to create a new Dependency object  with example: obj = Dependency(source_module, destination_module, source_setting, destination_setting)