code: def openTypeHheaCaretSlopeRunFallback(info):
      
      italicAngle = getAttrWithFallback(info, "italicAngle")
      if italicAngle != 0:
          slopeRise = getAttrWithFallback(info, "openTypeHheaCaretSlopeRise")
          return otRound(math.tan(math.radians(-italicAngle)) * slopeRise)
      return 0
docs: Fallback to *openTypeHheaCaretSlopeRun*. If the italicAngle is zero,
      return 0. If italicAngle is non-zero, compute the slope run from the
      complementary openTypeHheaCaretSlopeRise.