docs: def set_var_slice(self, name, start, count, var):
          """
          Overwrite the values in variable name with data
          from var, in the range (start:start+count).
          Start, count can be integers for rank 1, and can be
          tuples of integers for higher ranks.
          For some implementations it can be equivalent and more efficient to do:
          `get_var(name)[start[0]:start[0]+count[0], ..., start[n]:start[n]+count[n]] = var`
          """
          tmp = self.get_var(name).copy()
          # sometimes we want to slice in 1 dimension, sometimes in more
          # always slice in arrays
          start = np.atleast_1d(start)
          count = np.atleast_1d(count)
          slices = [np.s_[i:(i+n)] for i,n in zip(start, count)]
          tmp[slices] = var
          self.set_var(name, tmp)