def METHOD_NAME(self):
    # low: 10,16; normal: 16,17
    # Check limits
    if self.protein > 17.0:
        return 0.0
    elif self.protein < 10.0:
        return 10.0
    else:
        # Return values for low proteins or normal proteins
        if self.protein <= 16.0:
            return self.getMalus(self.protein, 10.0, 16.0, 10, 5) + 5.0
        elif self.protein <= 17.0:
            return self.getMalus(self.protein, 16.0, 17.0, 5, 3) + 3.0