How to use the @webiny/app-page-builder/editor/utils.addElementToParent function in @webiny/app-page-builder

const handleDroppedElement = (source, target, position) => {
    let dispatchNew = false;
    let element;
    
    if (source.path) {
        // $FlowFixMe
        element = cloneElement(source);
    } else {
        dispatchNew = true;
        element = createElement(source.type, {}, target);
    }
    
    target = addElementToParent(element, target, position);
    redux.store.dispatch(updateElement({ element: target }));

    if (source.path) {
        redux.store.dispatch(deleteElement({ element: source }));
    }

    if (dispatchNew) {
        redux.store.dispatch(elementCreated({ element, source }));
    }
};

onReceived({ source, target, position = null }) {
            let dispatchNew = false;
            let element;
            if (source.path) {
                // $FlowFixMe
                element = cloneElement(source);
            } else {
                dispatchNew = true;
                element = createElement(source.type, {}, target);
            }

            const block = addElementToParent(element, target, position);

            // Dispatch update action
            redux.store.dispatch(updateElement({ element: block }));

            // Delete exiting element
            if (source.path) {
                redux.store.dispatch(deleteElement({ element: source }));
            }

            if (dispatchNew) {
                redux.store.dispatch(elementCreated({ element, source }));
            }
        },
        onChildDeleted({ element }) {

row.elements[targetIndex].data.width /= 2;

    // Create a new column with half of the original target width
    let newColumn;
    if (source.path) {
        // $FlowFixMe
        newColumn = cloneElement(source);
    } else {
        dispatchNew = true;
        newColumn = createColumn();
    }

    // $FlowFixMe
    newColumn = set(newColumn, "data.width", row.elements[targetIndex].data.width);

    row = addElementToParent(newColumn, row, targetIndex + 1);
    redux.store.dispatch(updateElement({ element: row }));

    if (source.path) {
        redux.store.dispatch(deleteElement({ element: source }));
    }

    if (dispatchNew) {
        redux.store.dispatch(elementCreated({ element: newColumn, source }));
    }
};

let element;
            if (source.path) {
                // $FlowFixMe
                element = cloneElement(source);
            } else {
                dispatchNew = true;
                element = createElement(source.type, {}, target);
            }

            let column;
            if (element.type !== "column") {
                column = createColumn({ elements: [element] });
            }

            // Add new child element
            let row = addElementToParent(column || element, target, position);

            // Recalculate column widths
            row = distributeColumnWidths(row);

            // Dispatch update action
            dispatch(updateElement({ element: row }));

            if (source.path) {
                dispatch(deleteElement({ element: source }));
            }

            if (dispatchNew) {
                dispatch(elementCreated({ element, source }));
            }
        },