code: def getLimit(self, alpha, upper=True):
          
          dlnl = onesided_cl_to_dlnl(1.0 - alpha)
          return self.getDeltaLogLike(dlnl, upper=upper)
docs: Evaluate the limits corresponding to a C.L. of (1-alpha)%.
  
          Parameters
          ----------
          alpha :  limit confidence level.
          upper :  upper or lower limits.