How to use the @material/icon-toggle/index.MDCIconToggle function in @material/icon-toggle

import * as textField from '@material/textfield/index';
import * as toolbar from '@material/toolbar/index';
import * as topAppBar from '@material/top-app-bar/index';

// Register all components
autoInit.register('MDCCheckbox', checkbox.MDCCheckbox);
autoInit.register('MDCChip', chips.MDCChip);
autoInit.register('MDCChipSet', chips.MDCChipSet);
autoInit.register('MDCDialog', dialog.MDCDialog);
autoInit.register('MDCPersistentDrawer', drawer.MDCPersistentDrawer);
autoInit.register('MDCTemporaryDrawer', drawer.MDCTemporaryDrawer);
autoInit.register('MDCFloatingLabel', floatingLabel.MDCFloatingLabel);
autoInit.register('MDCFormField', formField.MDCFormField);
autoInit.register('MDCRipple', ripple.MDCRipple);
autoInit.register('MDCGridList', gridList.MDCGridList);
autoInit.register('MDCIconToggle', iconToggle.MDCIconToggle);
autoInit.register('MDCLineRipple', lineRipple.MDCLineRipple);
autoInit.register('MDCLinearProgress', linearProgress.MDCLinearProgress);
autoInit.register('MDCNotchedOutline', notchedOutline.MDCNotchedOutline);
autoInit.register('MDCRadio', radio.MDCRadio);
autoInit.register('MDCSnackbar', snackbar.MDCSnackbar);
autoInit.register('MDCTab_', tab.MDCTab);
autoInit.register('MDCTabIndicator', tabIndicator.MDCTabIndicator);
autoInit.register('MDCTab', tabs.MDCTab);
autoInit.register('MDCTabBar', tabs.MDCTabBar);
autoInit.register('MDCTextField', textField.MDCTextField);
autoInit.register('MDCMenu', menu.MDCMenu);
autoInit.register('MDCSelect', select.MDCSelect);
autoInit.register('MDCSlider', slider.MDCSlider);
autoInit.register('MDCToolbar', toolbar.MDCToolbar);
autoInit.register('MDCTopAppBar', topAppBar.MDCTopAppBar);