docs: def get_error_probability(self):
      """This means for the base we are talking about how many errors between 0 and 1 do we attribute to it?
         For the 'unobserved' errors, these can only count when one is adjacent to base
  
      :returns: error probability p(error_observed)+(1-p_error_observed)*error_unobserved
      :rtype: float
  
      """
      a = self._observable.get_error_probability()
      b = self._unobservable.get_error_probability()
      return a+(1-a)*b