How can i get face detected bounding-box in face-mesh code example

Example: How can i get face detected bounding-box in face-mesh

if res.multi_face_landmarks:
            for faceLms in res.multi_face_landmarks:
                mpDraw.draw_landmarks(imgOriginal, faceLms, mpFaceMesh.FACE_CONNECTIONS, drawSpec, drawSpec)

                h, w, c = imgOriginal.shape
                cx_min = w
                cy_min = h
                cx_max = cy_max = 0
                for id, lm in enumerate(faceLms.landmark):
                    cx, cy = int(lm.x * w), int(lm.y * h)
                    if cx < cx_min:
                        cx_min = cx
                    if cy < cy_min:
                        cy_min = cy
                    if cx > cx_max:
                        cx_max = cx
                    if cy > cy_max:
                        cy_max = cy
				cv2.rectangle(imgOriginal, (cx_min, cy_min), (cx_max, cy_max), (255, 255, 0), 2)