How to use the @shopify/polaris-icons.chevronDown function in @shopify/polaris-icons

import POLARIS_ICONS from '@shopify/polaris-icons';

export const add = POLARIS_ICONS.add;
export const alert = POLARIS_ICONS.alert;
export const arrowDown = POLARIS_ICONS.arrowDown;
export const arrowLeft = POLARIS_ICONS.arrowLeft;
export const arrowRight = POLARIS_ICONS.arrowRight;
export const arrowUp = POLARIS_ICONS.arrowUp;
export const arrowUpDown = POLARIS_ICONS.arrowUpDown;
export const calendar = POLARIS_ICONS.calendar;
export const cancel = POLARIS_ICONS.cancel;
export const cancelSmall = POLARIS_ICONS.cancelSmall;
export const caretDown = POLARIS_ICONS.caretDown;
export const caretUp = POLARIS_ICONS.caretUp;
export const checkmark = POLARIS_ICONS.checkmark;
export const chevronDown = POLARIS_ICONS.chevronDown;
export const chevronLeft = POLARIS_ICONS.chevronLeft;
export const chevronRight = POLARIS_ICONS.chevronRight;
export const chevronUp = POLARIS_ICONS.chevronUp;
export const circleCancel = POLARIS_ICONS.circleCancel;
export const circleChevronDown = POLARIS_ICONS.circleChevronDown;
export const circleChevronLeft = POLARIS_ICONS.circleChevronLeft;
export const circleChevronRight = POLARIS_ICONS.circleChevronRight;
export const circleChevronUp = POLARIS_ICONS.circleChevronUp;
export const circleInformation = POLARIS_ICONS.circleInformation;
export const circlePlus = POLARIS_ICONS.circlePlus;
export const circlePlusOutline = POLARIS_ICONS.circlePlusOutline;
export const conversation = POLARIS_ICONS.conversation;
export const deleteIcon = POLARIS_ICONS.deleteIcon;
export const disable = POLARIS_ICONS.disable;
export const dispute = POLARIS_ICONS.dispute;
export const duplicate = POLARIS_ICONS.duplicate;