gantt.createDataProcessor((mode: 'task' | 'link', taskState: string, data: Task | Link, _rowId: unknown) => {
            switch (mode) {
                case 'link': {
                    switch (taskState) {
                        case 'create':
                            this.api.linkCreate(data as Link)
                                .then(result => {
                                    console.log('created link: ', result);
                                    gantt.changeLinkId(data.id as string, result.id as string);
                                })
                                .catch(error => {
                                    gantt.undo();
                                    this.displayError(error);
                                });
                            break;
                        case 'delete':
                            this.api.linkRemove(data.id as string)
                                .then(_result => void 0)
                                .catch(error => {
                                    gantt.undo();
                                    this.displayError(error);
                                });
                            break;
                        case 'update':
                            this.api.linkUpdate(data as Link)
                                .then(result => {
                                    gantt.changeLinkId(data.id as string, result.id as string);
                                })
                                .catch(error => {
                                    gantt.undo();
                                    this.displayError(error);
                                });
                            break;
                    }
                    break;
                }
                case 'task': {
                    switch (taskState) {
                        case 'create':
                            this.api.taskCreate(data as Task)
                                .then(result => {
                                    console.log('created task: ', result);
                                    gantt.changeTaskId(data.id as string, result.id as string);
                                })
                                .catch(error => {
                                    gantt.undo();
                                    this.displayError(error);
                                });
                            break;
                        case 'delete':
                            this.api.taskRemove(data.id as string)
                                .then(_result => void 0)
                                .catch(error => {
                                    gantt.undo();
                                    this.displayError(error);
                                });
                            break;
                        case 'update':
                            this.api.taskUpdate(data as Task)
                                .then(_result => void 0)
                                .catch(error => {
                                    gantt.undo();
                                    this.displayError(error);
                                });
                            break;
                    }
                    break;
                }
                default: {

                    throw new Error('Unsupported mode');
                }
            }
        });