docs: def Inference(probability=None, relation=None, name=None, concept=None):
      """Represents a probable cause / relation between this event and some prior.
  
      Args:
          probability(float): Value 0.0 to 1.0.
          relation(str): e.g. 'associated' or 'identified' (see Voevent spec)
          name(str): e.g. name of identified progenitor.
          concept(str): One of a 'formal UCD-like vocabulary of astronomical
              concepts', e.g. http://ivoat.ivoa.net/stars.supernova.Ia - see
              VOEvent spec.
      """
      atts = {}
      if probability is not None:
          atts['probability'] = str(probability)
      if relation is not None:
          atts['relation'] = relation
      inf = objectify.Element('Inference', attrib=atts)
      if name is not None:
          inf.Name = name
      if concept is not None:
          inf.Concept = concept
      return inf