Simulate swipe operation
        Args:
            x1, y1(int): from position
            x2, y2(int): to position
            duration(float): swipe duration, unit seconds

def swipe(self, x1, y1, x2, y2, duration=0.5):
        """Simulate swipe operation
        Args:
            x1, y1(int): from position
            x2, y2(int): to position
            duration(float): swipe duration, unit seconds
        """
        scale = self.scale
        x1, y1, x2, y2 = x1/scale, y1/scale, x2/scale, y2/scale
        self.session.swipe(x1, y1, x2, y2, duration)