docs: def sub(self, *args, **kwargs):
          """ sub(other, rho=0, inplace=True)
          Subtracts an *other* number instance. The correlation coefficient *rho* can be configured
          per uncertainty when passed as a dict. When *inplace* is *False*, a new instance is
          returned.
          """
          return self._apply(operator.sub, *args, **kwargs)