kle91203

  def add_attr(event_attr, person_attrs) do
    new_attr_value = [%Person.AttributeValue{
      :timestamp => event_attr.timestamp,
      :confidence => event_attr.confidence,
      :value => event_attr.value
    }]
    curr_attr = Map.get(person_attrs, event_attr.field)
    if (curr_attr === nil) do #the person doesn't have that attr
      # add_new(person_attrs, )
      new_attr_source = %{