code: def __init__(self, variable, annotation, levels, **parameters):
      if variable is None:
          raise ValueError("variable can't be none")
  
      if annotation is None:
          raise ValueError("annotation can't be none")
  
      self.variable = variable
      self.annotation = annotation
      self.levels = levels
      self.parameters = parameters
  
label_desc: Use image node_id 1 to create a new MappingMeta object  with example: obj = MappingMeta(variable, annotation, levels)